Striped Mock Neck Sweater

Derek Lam 10 Crosby x RTR

4
(196 Reviews)

Product Details

This chunky knit striped sweater by Derek Lam Collective is the epitome of cozy fall fashion partially tucked into leather joggers.

Materials and Measurements

Off-white stripe knit (70% Acrylic, 30% Wool). Sweater. Long sleeves. Mock neck. Pull on. 3" sleeves slit. Imported.

Size and Fit

Sized: XS-XXL.

Model is 5'9 and wearing a size Small. 

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Ratings &
Reviews

  (196)  

Includes written reviews and customer fit feedback.

Fit
Runs Small
True to Size
Runs Large

All Photos

Top Contributor
Size worn:
XS
Overall fit:
True to Size
Rented for:
Work
Usually wears: 0
Height: 5' 6"
Bust size: 32B
Body type: Straight & narrow
Weight: 110lbs
Browse Sondra's reviews
September 1st, 2025
Great winter sweater

I mostly wore with jeans, but pictured here with a black skirt and boots for a more polished look. Definitely a bit oversized, that works for a cozy aesthetic.

Top Contributor
Size worn:
M
Overall fit:
Large
Usually wears: 6
Height: 5' 7"
Bust size: 36DD
Body type: Hourglass
Weight: 145lbs
Browse Ellieclaire's reviews
March 21st, 2025
Cozy and cute

Slightly baggy fit but very comfortable

Overall Fit

Runs big

Top Contributor
Size worn:
XL
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 12
Height: 5' 10"
Bust size: 38G
Body type: Hourglass
Weight: 200lbs
Browse Jael's reviews
March 4th, 2025
Napa chic

Very cute sweater, easy to dress up or down!

Overall Fit

Just right

Top Contributor
Size worn:
S
Overall fit:
Large
Usually wears: 4
Height: 5' 3"
Bust size: 34D
Body type: Petite
Weight: 135lbs
Browse Cassidy's reviews
November 28th, 2024
Cozy & subtle

Overall Fit

Runs big

Top Contributor
Size worn:
XS
Overall fit:
True to Size
Rented for:
Date
Usually wears: 2
Height: 5' 5"
Bust size: 32D
Body type: Straight & narrow
Weight: 118lbs
Browse Katie's reviews
March 14th, 2025
in + line

warm and snuggly but fitted, not bulky. extra long sleeves and the perfect mock neck. when you want cozy but also cute.

Top Contributor
Size worn:
L
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 10
Height: 5' 9"
Bust size: 36D
Body type: Pear
Weight: 170lbs
Browse Debby's reviews
February 21st, 2025
Lots of compliments

I should buy it. Love it so much

Top Contributor
Size worn:
M
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 6
Height: 5' 0"
Bust size: 34D
Body type: Petite
Weight: 130lbs
Browse Amalia's reviews
February 18th, 2025
Beautiful and warm

This is a really modern style

Top Contributor
Size worn:
S
Overall fit:
True to Size
Rented for:
Work
Usually wears: 4
Height: 5' 4"
Bust size: 34C
Body type: Athletic
Weight: 128lbs
Browse Surin's reviews
April 23rd, 2024
Cute!

Super cute. Work with beige ankle jeans and Sambas for casual work trip-wear. Returning because season is changing and it’s too hot for it. But would have kept longer if it was winter.

Top Contributor
Size worn:
XS
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 4
Height: 5' 5"
Bust size: 32D
Body type: Pear
Weight: 140lbs
Browse Deena 's reviews
March 29th, 2024
Super easy to wear

Comfy, size down.

Top Contributor
Size worn:
M
Overall fit:
True to Size
Rented for:
Work
Usually wears: 4
Height: 5' 7"
Bust size: 32D
Body type: Hourglass
Weight: 145lbs
Browse Adrianna's reviews
February 7th, 2024
Perfect sweater, almost bought it

Such a perfect sweater, comfortable and cute. Almost bought this one!

Top Contributor
Size worn:
M
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 6
Height: 5' 8"
Bust size: 34B
Body type: Hourglass
Weight: 140lbs
Browse Morgan's reviews
January 19th, 2024
Casual elegance

A step up from your basic sweater but so well cut and so comfy! It’s a tad roomy by I took my true size and it fit perfectly.

Top Contributor
Size worn:
XL
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 14
Height: 5' 7"
Body type: Apple
Browse Stephanie 's reviews
January 18th, 2024
Dress up or down - cozy and chic

Wore this to the office and out.

Top Contributor
Size worn:
S
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 4
Height: 5' 8"
Bust size: 34C
Body type: Athletic
Weight: 135lbs
Browse Margaret's reviews
November 17th, 2023
Quality sweater

Loved this sweater, it wasn't super soft but it was very comfortable. Loved the look, my only complaint was the collar gets a little messed up but it honestly didn't bother me. Paired it with the Alexis Leather Jacket and got a TON of comments on my outfit. Highly recommend

Top Contributor
Size worn:
S
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 4
Height: 5' 2"
Bust size: 34B
Body type: Petite
Weight: 120lbs
Browse Tina's reviews
November 15th, 2023
I could live in this sweater

The fit isn’t 100% flattering however, it is so comfortable and beautiful that who cares. Baggy aesthetic but worth it. I’d buy

Top Contributor
Size worn:
S
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 4
Height: 5' 8"
Bust size: 34A
Body type: Hourglass
Weight: 140lbs
Browse Lauren's reviews
November 6th, 2023
STAPLE SWEATER 🖤

Derek Lam is always a slay. Wore this sweater sooo many times! Literally pairs well with everything. Great fit too!

Top Contributor
Size worn:
S
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 4
Height: 5' 8"
Bust size: 32DDD/E
Body type: Athletic
Weight: 140lbs
Browse Liza's reviews
October 8th, 2023
Easy for everyday casual

Runs true to size. Perfect for the cooler fall weather, cozy, not itchy. Would rent again, great staple for your closet!

Top Contributor
Size worn:
XXL
Overall fit:
True to Size
Rented for:
Work
Usually wears: 22
Height: 5' 3"
Bust size: 42D
Body type: Hourglass
Weight: 260lbs
Browse Amy's reviews
January 11th, 2024
A little short, but pretty

Wore a long tank underneath because it was a little short - but the placement of the stripe is perfect.

Top Contributor
Size worn:
M
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 6
Height: 5' 8"
Bust size: 34D
Body type: Straight & narrow
Weight: 140lbs
Browse Regan's reviews
January 18th, 2024
cute but meh

it’s cute but nothing special! i feel like the neck/shoulders fit funny but it might be because i have broad shoulders.

Top Contributor
Size worn:
S
Overall fit:
True to Size
Usually wears: 4
Height: 5' 7"
Weight: 135lbs
Browse Julia's reviews
June 4th, 2025
Cute but weird fit

Cute, got a lot of compliments. Armpits are very low and bizarrely fit so mainly wore over my shoulders only.

Overall Fit

Just right

Arms & Shoulders

Runs big

Length

Too Long

Top Contributor
Size worn:
S
Overall fit:
Large
Usually wears: 6
Height: 5' 2"
Bust size: 34C
Body type: Petite
Weight: 130lbs
Browse Rachel's reviews
April 6th, 2025
A bit bulky but comfortable. Long sleeves.

Overall Fit

Runs big

Top Contributor
Size worn:
S
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 4
Height: 5' 8"
Bust size: 34B
Body type: Straight & narrow
Weight: 134lbs
Browse Taylor's reviews
February 4th, 2025
Nice casual option

Nothing WOW about this sweater, but it was a good casual piece for everyday wear that I enjoyed having. The sleeves were nice and long and I liked the little mock neck. Wasn’t itchy at all. If between sizes or short, I would size down.

Top Contributor
Size worn:
S
Overall fit:
Large
Rented for:
Everyday
Usually wears: 4
Height: 5' 2"
Bust size: 34C
Body type: Petite
Weight: 125lbs
Browse Amie's reviews
December 29th, 2024
Too much material.

I wanted to love this, because I love warm, cozy, sweaters. But there was just too much material as you can see in the picture. Made it not flattering. I’m quite sure, so would probably look much better on someone taller. I did like the mock neck.

Top Contributor
Size worn:
M
Overall fit:
Large
Usually wears: 8
Height: 5' 3"
Bust size: 36D
Body type: Petite
Weight: 153lbs
Browse Ryann's reviews
March 13th, 2025
Oddly structured

The arms are long and the width is wide, feels like there should be shoulder pads. Kinda itchy. Quality so-so.

Overall Fit

Runs big

Chest

Just right

Arms & Shoulders

Runs big

Waist

Just right

Length

Too Long

Top Contributor
Size worn:
L
Overall fit:
True to Size
Usually wears: 12
Height: 5' 6"
Bust size: 36DD
Body type: Pear
Weight: 180lbs
Browse Christi's reviews
March 6th, 2024
Neckline not ideal. Itchy.

I will not be keeping this one. The neckline is oddly shaped and fits strange. Also, it’s is VERY itchy.

Top Contributor
Size worn:
M
Overall fit:
True to Size
Usually wears: 6
Height: 5' 9"
Body type: Athletic
Browse Ebony lewkovitz's reviews
November 6th, 2024
Epic fail

Photo says it all. This neckline. Bleh.

Overall Fit

Just right

Chest

Just right

Arms & Shoulders

Runs small

Waist

Just right

Length

Just right

Top Contributor
Size worn:
M
Overall fit:
True to Size
Usually wears: 6
Height: 5' 2"
Body type: Hourglass
Browse Karly's reviews
March 6th, 2025
Soft and comfortable

I really liked this sweater, the details in the neck and shoulder make the fit great.

Overall Fit

Just right

Top Contributor
Size worn:
XS
Overall fit:
True to Size
Usually wears: 2
Height: 5' 3"
Weight: 130lbs
Browse Rachel's reviews
February 21st, 2025
Cute and cozy

I really enjoyed this sweater. It had a high end feel to it and could be worn for many occasions.

Overall Fit

Just right

Chest

Just right

Arms & Shoulders

Just right

Waist

Just right

Length

Just right

Top Contributor
Size worn:
L
Overall fit:
Large
Usually wears: 12
Height: 5' 8"
Body type: Hourglass
Browse RTR Member's reviews
February 19th, 2025
Size down or it will bunch at the top

Cute but you can't really lift your arms and it bunches at the top if you move around too much

Overall Fit

Runs big

Chest

Runs big

Arms & Shoulders

Runs big

Waist

Just right

Length

Just right

Top Contributor
Size worn:
S
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 4
Height: 5' 8"
Bust size: 34DD
Body type: Athletic
Weight: 135lbs
Browse Tracey's reviews
January 30th, 2025
Love this sweater!

Fits perfectly. Looked great with black jeans, regular denim, black skirt. Wore it for zoom calls, for every day.

Overall Fit

Just right

Top Contributor
Size worn:
XL
Overall fit:
True to Size
Usually wears: 14
Height: 5' 5"
Bust size: 38DDD/E
Body type: Hourglass
Browse Lesli's reviews
January 22nd, 2025
Nice sweater

I liked the neckline--you could leave it more up or more like a turtle.

Overall Fit

Just right

Top Contributor
Size worn:
XL
Overall fit:
True to Size
Usually wears: 12
Height: 5' 7"
Bust size: 38D
Body type: Hourglass
Weight: 185lbs
Browse Ariele's reviews
January 8th, 2025
Great winter and work sweater

Love that this sweater could be dressed up or down and the neck shape was unique but comfortable.

Overall Fit

Just right

Top Contributor
Size worn:
XS
Overall fit:
Large
Usually wears: 6
Height: 5' 6"
Weight: 140lbs
Browse Ruthie's reviews
January 8th, 2025
Cute sweater

I ordered an XS, normally a M. It fit perfectly.

Overall Fit

Runs big

Top Contributor
Size worn:
XS
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 2
Height: 5' 7"
Bust size: 32F
Body type: Hourglass
Weight: 125lbs
Browse Mandy's reviews
November 29th, 2024
Relaxed and stylish!

Nice long sleeves, and the stripe pattern is so cute on. Great for chilly days.

Overall Fit

Just right

Top Contributor
Size worn:
S
Overall fit:
True to Size
Usually wears: 4
Height: 5' 10"
Body type: Straight & narrow
Weight: 137lbs
Browse Monica's reviews
June 19th, 2025
Bought it

Love it. Not itchy at all. I’m so glad I didn’t listen to the other reviews that said it was itchy because I’m very sensitive to itchy things. Like extremely sensitive and I got this sweater anyway because I liked how it looked. It’s not like super cozy like fleece or something, but it’s just normal Like it looks the way that it feels. And it’s not itchy at all. I ended up buying it. I love it! Cheerful, listening to people‘s reviews sometimes because there was another item where everybody kept complaining about the chest being too big so I size down and then the chest was super tight so Everyone just has different bodies and different opinions. Anyway, that was my take away from this rental!

Top Contributor
Size worn:
XL
Overall fit:
True to Size
Usually wears: 12
Height: 5' 3"
Bust size: 38C
Body type: Petite
Weight: 180lbs
Browse Michelle's reviews
March 11th, 2025
Fun, versatile sweater!

Can be dressed up with a skirt and heels or dressed down with jeans and sneakers. Either way, it’s a comfy, stylish sweater.

Top Contributor
Size worn:
M
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 6
Height: 5' 6"
Body type: Pear
Weight: 148lbs
Browse Sarahann's reviews
February 10th, 2025
Oversized chunky sweater

Loved with a long skirt and belt and also wore with jeans! Super cozy

Top Contributor
Size worn:
XXL
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 16
Height: 5' 6"
Bust size: 38C
Body type: Pear
Weight: 196lbs
Browse Shardae's reviews
January 30th, 2025
perfect to dress up or down.

It does have a weird shoulder shape, and long arms.. but somehow I love it. It was comfortable and fit just right hiding my growing baby bump!

Top Contributor
Size worn:
XS
Usually wears: 4
Height: 5' 3"
Bust size: 34D
Body type: Petite
Weight: 116lbs
Browse Sarah's reviews
January 30th, 2025
More than meets the eye

It's not your basic sailor stripe sweater-- nice knit details, high quality. I would have purchased but it ran big for me.

Top Contributor
Size worn:
M
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 6
Height: 5' 7"
Body type: Athletic
Weight: 150lbs
Browse Sarah's reviews
December 15th, 2024
Great look, warm, high quality

Loved this sweater -- warm and looks instantly put together. It is a bit bulky so beware if you are packing it for a trip.

Top Contributor
Size worn:
XS
Overall fit:
True to Size
Rented for:
Everyday
Usually wears: 2
Height: 5' 4"
Bust size: 34B
Body type: Hourglass
Weight: 117lbs
Browse Kelly's reviews
November 19th, 2024
Comfy & High Quality

I wore this sweater multiple times during a trip to Europe with jeans, black pants and sweats. It’s warm without being bulky and the quality elevates every look.

See more reviews:
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