×
What are you looking for?
GO
Mens
Womens
×
Save up to 33% off with bundles.
4 Pack
7 Pack
10 Pack
Best Value
Gender
Men's
Boys
Women's
Girls
Size
Style
←
How to get started
1
Select your gender from the dropdown above
2
Choose your size to view available products
3
Select and add products to claim your offer
→
ⓘ
Selected product is not available in this size
Size Guide
Add to selection
Your selection. Click to edit.
0 of 0 items added
Add to Cart
Size Guide
×
Women's
Men's
Kids
SmoothFit Padded Bra
Bottoms
Size
AU/NZ
UK
US
XS
8A
8B
10A
30A
30B
32A
30A
30B
32A
Small
8DD
10B
10C
10D
10DD
12A
12B
30DD
32B
32C
32D
32DD
34A
34B
30DD
32B
32DD
32C
32D
34A
34B
Medium
12C
12D
12DD
12E
14A
14B
34C
34D
34DD
34E
36A
36B
34C
34D
34DD
34DDD
36A
36B
Large
14C
14D
14DD
14E
16A
16B
16C
36C
36D
36DD
36E
38A
38B
38C
36C
36D
36DD
36DDD
38B
38C
XL
16D
16DD
16E
18A
18B
18C
18D
38D
38DD
38E
40A
40B
40C
40D
38D
38DD
38DDD
40A
40B
40C
40D
Size
AU Size
UK Size
Waist (cm)
XS
04-06
00-02
60
Small
08-10
04-06
64
Medium
12-14
08-10
68
Large
16-18
12-14
72
XL
20-22
16-18
76
2XL
24-26
20-22
80
Size
Waist (cm)
Waist (in)
2XS / (Size 4/8)
53-56
21-22
XS / (Size 8/12)
57-66
23-26
Small
67-76
27-30
Medium
77-86
31-34
Large
87-97
35-38
Extra Large
98-107
39-42
2XL
108-115
43-45
3XL
116-125
46-49
4XL
126-133
50-52
5XL
134-143
53-56
6XL
144-150
57-59
Size
Waist (cm)
Waist (in)
4XS (Age & Size 3-4)
40-44
15-17
3XS (Age & Size 5-6)
45-51
18-20
2XS (Age & Size 7-8)
52-59
21-22
XS (Age & Size 9-11)
60-69
23-26
S (Ages & Size 12-14)
70-76
27-30
Skip to content
Open navigation menu
Open search
Mens
Up to 20% Off
Everyday
Boxer Briefs
Boxer Brief Fly
Cloud Mesh
Trunks
Up to 20% Off
Athletic
Boxer Brief Sports
Cloud Mesh Sport
Long Johns
New Addition
Socks
Crew Sock
Ankle Sock
No Show Sock
Brand New
Sleepwear
NiteKnit™ Men's Sleepwear
NiteKnit™ Sleepwear
Shop The Sale
Womens
Up to 30% Off
Everyday
SmoothFit Bikini Brief
SmoothFit Full Brief
SmoothFit Thong
SmoothFit Bra
Up to 40% Off
Active & Shapewear
Body Shorts
Boyleg
Classic Bikini Brief
Brand New
Period Underwear
Full Brief
Bikini Brief
Thong
Brand New
Socks
Crew Sock
Ankle Sock
No Show Sock
Shop the Sale
Period Underwear
Kids
FSC & Sustainability
Ethical
Compost
Bamboo
About Us
FAQs
Boxing Day Sale
Step One UK
UK
AU
US
Open search
Open account page
Open cart
0
Mens
Up to 20% Off
Womens
Up to 40% Off
Kids
FSC & Sustainability
About Us
FAQs
Boxing Day Sale
Mens
Shop All
Discover The Range
Everyday
Up to 20% Off
Athletic
Up to 20% Off
Socks
New Addition
Sleepwear
Brand New
NiteKnit™ Sleepwear
Shop The Sale
Womens
Shop All
Discover The Range
Everyday
Up to 30% Off
Active & Shapewear
Up to 40% Off
Period Underwear
Brand New
Socks
Brand New
Shop the Sale
Period Underwear
Kids
Boys
Junior Trunk
Girls
Girls Shortie
FSC & Sustainability
Ethical
Compost
Bamboo
Everyday
Boxer Briefs
Boxer Brief Fly
Cloud Mesh
Trunks
Classic Best Seller
New - Rouge Noir
Athletic
Boxer Brief Sports
Cloud Mesh Sport
Long Johns
Cloud Mesh Sport
Best Seller
Socks
Crew Sock
Ankle Sock
No Show Sock
Best Seller
Fresh Colours
Everyday
SmoothFit Bikini Brief
SmoothFit Full Brief
SmoothFit Thong
SmoothFit Bra
SmoothFit Thong
SmoothFit Bra
Active & Shapewear
Body Shorts
Boyleg
Classic Bikini Brief
Body Short
Boyleg
Period Underwear
Full Brief
Bikini Brief
Thong
Period Full Brief
Period Bikini Brief
Socks
Crew Sock
Ankle Sock
No Show Sock
Matching Sets
Nudes
0
SHOP MEN'S
SHOP WOMEN'S
SHOP JUNIOR'S
Clear
Close
Filters
Sort by
Featured
Best selling
Alphabetically, A-Z
Alphabetically, Z-A
Price, low to high
Price, high to low
Date, old to new
Date, new to old
Colour
Red
Blue
Green
Yellow
White
Black
Orange
Pink
Purple
Grey
Multicoloured
Brown
Nude
Mystery
Light Beige
Pink Beige
Tan
Ash Brown
Size
2XS
2XS - Ages 6-8
Ages 2-3
Ages 4-5
Ages 6-7
Ages 8-10
Ages 10-12
Ages 12-14
S - Ages 12-14
XS - Ages 9-11
XS
Small
Medium
Large
XL
2XL
3XL
4XL
5XL
Shape
Boxer Brief
Boxer Brief Fly
Junior Trunk
Trunk
Sport
Long John
Bikini Brief
SmoothFit Thong
SmoothFit Bikini Brief
SmoothFit Full Brief
SmoothFit Bra
SmoothFit Boyleg
Body Short
Girls Shortie
Gender
Mens
Womens
Boys
Girls
Price
£
to
£
In stock only
Apply
Apply
Filters
Sort by:
Best selling
Featured
Best selling
Alphabetically, A-Z
Alphabetically, Z-A
Price, low to high
Price, high to low
Date, old to new
Date, new to old
Filter and sort
Colour
Red
Blue
Green
Yellow
White
Black
Orange
Pink
Purple
Grey
Multicoloured
Brown
Nude
Mystery
Light Beige
Pink Beige
Tan
Ash Brown
Size
2XS
2XS - Ages 6-8
Ages 2-3
Ages 4-5
Ages 6-7
Ages 8-10
Ages 10-12
Ages 12-14
S - Ages 12-14
XS - Ages 9-11
XS
Small
Medium
Large
XL
2XL
3XL
4XL
5XL
Shape
Boxer Brief
Boxer Brief Fly
Junior Trunk
Trunk
Sport
Long John
Bikini Brief
SmoothFit Thong
SmoothFit Bikini Brief
SmoothFit Full Brief
SmoothFit Bra
SmoothFit Boyleg
Body Short
Girls Shortie
Gender
Mens
Womens
Boys
Girls
Price
£
to
£
In stock only
Apply
380 products
Save 30%
+ Quick add
Women's SmoothFit Bikini Brief - Olive Green
Sale price
£8.40
Regular price
£12.00
Save 40%
+ Quick add
Women's Bikini Brief - Mistle Toes
Sale price
£7.20
Regular price
£12.00
Save 15%
+ Quick add
Junior Trunk - Jingle Balls
Sale price
£7.65
Regular price
£9.00
Save 30%
+ Quick add
Women's SmoothFit Boyleg - Tan
Sale price
£9.10
Regular price
£13.00
Save 40%
+ Quick add
Women's Body Shorts - Zero Lucks Given
Sale price
£9.00
Regular price
£15.00
Save 15%
+ Quick add
Junior Trunk - Frost Bites
Sale price
£7.65
Regular price
£9.00
Save 52%
+ Quick add
Boxer Brief - Mystery 4 Pack
Sale price
£52.00
Regular price
£108.00
Save 30%
+ Quick add
Women's SmoothFit Boyleg - Olive Green
Sale price
£9.10
Regular price
£13.00
Save 40%
+ Quick add
Women's Body Shorts - Jessica
Sale price
£9.00
Regular price
£15.00
Save 15%
+ Quick add
Junior Trunk - Mistle Toes
Sale price
£7.65
Regular price
£9.00
Save 30%
+ Quick add
Women's SmoothFit Boyleg - Dark Purple
Sale price
£9.10
Regular price
£13.00
Save 50%
+ Quick add
Women's Body Short - Mystery 4x Pack
Sale price
£30.00
Regular price
£60.00
Save 30%
+ Quick add
Women's SmoothFit Padded Bra - Prism Pink
Sale price
£13.30
Regular price
£19.00
Best Seller
Save 25%
+ Quick add
Boxer Brief Fly - Black Currants
Sale price
£12.00
Regular price
£16.00
Save 40%
+ Quick add
Women's Body Shorts - Rebecca
Sale price
£9.00
Regular price
£15.00
Save 30%
+ Quick add
Women's SmoothFit Boyleg - Ash Brown
Sale price
£9.10
Regular price
£13.00
Save 30%
+ Quick add
Women's SmoothFit Bikini Brief - Prism Pink
Sale price
£8.40
Regular price
£12.00
Save 40%
+ Quick add
Women's Body Shorts - Michelle
Sale price
£9.00
Regular price
£15.00
Best Seller
Save 31%
+ Quick add
Boxer Brief - Ahoy Sailor
Sale price
£10.40
Regular price
£15.00
Save 40%
+ Quick add
Women's Bikini Brief - Rebecca
Sale price
£7.20
Regular price
£12.00
Save 31%
+ Quick add
Boxer Brief - Juicy Plums - Clearance
Sale price
£10.40
Regular price
£15.00
14 / 16
Save up to 15% off your order
using our Bulk Discount
0
4
£1.00
£3.00
£5.00
![[EXP-A] Black Underwear with Fly at Step One - Model:Angus](http://uk.stepone.life/cdn/shop/files/240521_S1_1_MENS_0043.jpg?v=1718624854&width=1200)
![[EXP-A] Boxer Brief Dark Blue Men's Underwear with Black Panels - Model:Angus](http://uk.stepone.life/cdn/shop/files/240521_S1_1_MENS_1061.jpg?v=1757651446&width=1200)
![[EXP-A] Men's Bamboo Underwear Boxers in purple - Model:Skyler](http://uk.stepone.life/cdn/shop/files/240515_S1_1_MENS_0172.jpg?v=1757651530&width=1200)
![[EXP-A] Men's Bamboo Underwear Boxers in black and grey - Model:Skyler](http://uk.stepone.life/cdn/shop/files/Frame9.png?v=1757651530&width=600)
![[EXP-A] Men's Bamboo Underwear Boxers in all black - Model:Skyler](http://uk.stepone.life/cdn/shop/files/240515_S1_1_MENS_0031.jpg?v=1746144020&width=600)
![[EXP-A] Women's SmoothFit Thong - Espresso-Tini - Bamboo Underwear - Model:Elke](http://uk.stepone.life/cdn/shop/files/240515_S1_2_WOMANS_1181.jpg?v=1717594561&width=600)
![[EXP-A] Women's Underwear Body Short in Black - Model:Yolanda](http://uk.stepone.life/cdn/shop/files/240515_S1_2_WOMANS_0332.jpg?v=1717034909&width=600)
