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  • to access order history and track deliveries

Nonna A Comfortable pants My granddaughter (aged 8) says these are her most comfortable pants

Oldbutyoung Modern styling Bought these to put in my granddaughters Christmas stocking. Bought the black pair which look more modern for a 9 year old. As yet not sure of the sizing and quality but look good.

TMS Great! My daughter has ASD and sensory processing disorder so we have lots of problems finding underwear. She loves these knickers as they are seam free but not too loose. It would be great if they could be sold without a label and in different colours other than black or white but they still get full marks from us.

null Girls seam free knickers My granddaughter loves them, just wish we could get the crop top that matches they seem to be out of stock all the time

RA Not what we were looking for The cut is low on the thighs and digging not very comfortable. Wanted it to be a bikini for rather that low shorts. We wanted them to fit l under a leotard. Otherwise fabric is soft

Barb59 Snuggle your bum Lovely fit for girls knickers, granddaughter loves them

Nina95 Change of sizing? My daughter has been wearing this style for years and they are the only one she like. I bought the biggest size (15-16) recently but I noticed they’re the same size as the 13-14 she has at home! Very strange! It’s a shame this style is not available in adult sizes as we couldn’t find anything seamless in store or online.

No1Supernanny Excellent product Excellent product its soft and stretchy and no seams. They wash well and dry fast. The size seems to be right for the age stated. Would recommend especially if your child has sensory needs.

EmmaLB10 Great! Great fit, appearance and quality. Very happy with them.

Qwalker Great comfy pants. These pants are great, my 9 year old loves them. Very comfy and not too skimpy. Stay up, don’t roll down.

Joannaandkids Quality girls knickers Great quality, fit and wash well and last a long time too

KFox Girls plain black pants These do the job but they are quite small in size so I would go up a size.

Mattress protector Briefs These briefs material was like swimming costume material & not what i was expecting.

Kazby Fabulous knickers! These knickers have been amazing for my 9 year old daughter who struggles with the way some of her clothes feel. As soon as she put them on she instantly loved how comfortable they felt. Previously she would change her knickers 4 or 5 times each morning before they would feel ok but we don’t have that problem anymore. She is a petite 9 year old and the age 9-11 fit her perfectly so I would say they come up a bit small in size.

Eleroo Amazing pants! My daughter has sensory processing issues and uncomfortable pants with seems are a total no go. We have tested every brand possible (even some from America!) to find pants that pass the comfort test and these pants are our winner! Thanks M&S please continue to make these!

Beagle26 Incredible well worth the buy Amazing comfortable pants for young girls. My daughter is by no means over weight but she has a pear shaped body (it would seem the clothing industry believe this doesn’t exist and only skeletal sizing incredibly hard normally to finding underwear/clothing) she also likes big Bridget Jones pants style. therefore I have to get 3 or 4 times the age she is, but then they are usually cut all wrong and end up going up her bum. I believe because of the stretch in these she can wear then comfortably at the waist whilst still covering her entire bum. Also the seamlessness of them means they do not cause irritation as my daughter is also hypersensitive when it comes to clothes-can be another battle. Please please keep selling these forever!! And maybe bigger multipacks/colours? Don’t change a thing - happy customer on this occasion - Thanks so much M&S.

Finley1 Not cheap but great quality These are really great quality knickers. I bought them in black for my granddaughter and she loves them.

WFH2020 Nice pants. Soft, comfy and stretchy. daughter loves them. Wins all round.

umberella55 Comfy briefs Bought these for my Granddaughter and she thinks they are great! Very Comfortable.

JubileeSue Comfy black knickers for teens My granddaughter prefers these knickers to any others. She is now 14 and wearing size 15-16. I expect that by the time that she outgrows this size she will be wanting to buy her own underwear.


Christmas delivery and collection options

  • 2pk Seamfree Bikini Knickers (6-16 Yrs) 1 of 1
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2pk Seamfree Bikini Knickers (6-16 Yrs) 1 of 1


M&S Collection

2pk Seamfree Bikini Knickers (6-16 Yrs)

Product code: T713478S


Also available in: Matching Crop Tops and Matching Bra


Choose a size
Free standard delivery on orders over £60
Interest-free payments available on orders between £30.00 - £2000.00 with PayPal

Youngsters can never have too many pairs of spare underwear, and this two pack of kids’ bikini knickers is a comfortable and reliable choice to add to their drawer. Made with added stretch, these children’s knickers offer a great fit and plenty of movement.

Details & care


Product Style: Knickers

Added stretch


90% polyamide, 10% elastane, Gusset (of underwear) - 73% polyamide, 21% cotton and 6% elastane


Wash at 40°C

Do not bleach

Do not tumble dry

Do not iron

Do not dry clean

Delivery, collection & returns

Christmas delivery and collection last-order dates

Standard Delivery

Order by Sunday 17th of December

Nominated Day Delivery

Order by Saturday 23rd of December

Store Collection

Order by Saturday 23rd of December

Personalised Products

Order by Friday 15th of December



Free over £60, or £3.99

Nominated Day

£5.99. Order by 8pm for delivery tomorrow


Collect from store

Order before 10pm for free next-day in-store collection


UK returns


Exclusions apply

Full delivery and collection information