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Size Guide

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)
XS04-0600-0260
Small08-1004-0664
Medium12-1408-1068
Large16-1812-1472
XL20-2216-1876
2XL24-2620-2280
Size Waist (cm) Waist (in)
2XS / (Size 4/8)53-5621-22
XS / (Size 8/12)57-6623-26
Small67-7627-30
Medium77-8631-34
Large87-9735-38
Extra Large98-10739-42
2XL108-11543-45
3XL116-12546-49
4XL126-13350-52
5XL134-14353-56
6XL144-15057-59
Size Waist (cm) Waist (in)
4XS (Age & Size 3-4)40-4415-17
3XS (Age & Size 5-6)45-5118-20
2XS (Age & Size 7-8)52-5921-22
XS (Age & Size 9-11)60-6923-26
S (Ages & Size 12-14)70-7627-30
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  • My Love is the Sea

    Swallows mid-flight, roses in bloom, ships riding the swell

  • Melange Range Update

    Stonewash Grey & Desert Sage
  • Boxer Brief - Commandos - Bamboo Underwear

    New Release - Commandos

    Don't go commando, get Commandos.

  • True Maroon vs. Vivid Blue

    Maroon vs. Blue. Pick your side.

  • Yacht Rocks Vol. 3

    Nautical Stripes in sage green.

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    Compression that actually breathes.

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    Comfy & Durable 🌿

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    Engineered for Rest & Recovery
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Boxer Briefs

6" in-seam
Boxer Brief - Black CurrantsBoxer Brief - Yacht Rock Vol. 1Boxer Brief - Smoking Gun
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Boxer Brief Fly

6" in-seam
Boxer Brief Fly - Black CurrantsBoxer Brief Sport - NightridersCloud Mesh Boxer Brief - Black
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Trunks

4" in-seam
Trunk - Black CurrantsTrunk - Ahoy SailorTrunk - Smoking Gun
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Briefs

Classic cut
Brief - ScorpionsBrief - Blue OceanBrief - London Smoke
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Boxer Brief Sport

Athletic
Boxer Brief Sport - NightridersCloud Mesh Boxer Brief Sport - BlackBoxer Brief Sport - Nightriders
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Breathable
CloudPress Pro Compression Tights - Knee-LengthCloudPress Pro Compression Tights - 3/4-LengthCloudPress Pro Compression Tights - Full-Length
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SmoothFit Bra

Lifts and supports
Women's SmoothFit Padded Bra - Espresso-TiniWomen's SmoothFit Padded Bra - Chic ChampagneWomen's SmoothFit Padded Bra - Pink Beige
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SmoothFit Bikini Brief

Moderate coverage
Women's SmoothFit Bikini Brief - Espresso-TiniWomen's SmoothFit Bikini Brief - Pink BeigeWomen's SmoothFit Bikini Brief - Blue Lagoon
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SmoothFit Full Brief

Full coverage
Women's SmoothFit Full Brief - Espresso-TiniWomen's SmoothFit Full Brief - Ash BrownWomen's SmoothFit Full Brief - Piña Colada
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SmoothFit Thong

Cheeky
Women's SmoothFit Thong - Espresso-TiniWomen's SmoothFit Thong - Chic ChampagneWomen's SmoothFit Thong - Light Beige
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Active & shapewear
Women's Body Shorts - Tap ShoeWomen's Body Shorts - WhiteWomen's Body Shorts - Blush
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Boyleg

Moderate coverage
Women's SmoothFit Boyleg - Pink BeigeWomen's SmoothFit Boyleg - Espresso-tiniWomen's SmoothFit Boyleg - Chic Champagne
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SocksSocks SleepwearSleepwear MensMens

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Ages 2 to 14
Junior Trunk - Black CurrantsJunior Trunk - Butter NutsJunior Trunk - Smashed Avo
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All day comfort
Girls Brief - SLSA Nippers x Step OneGirls Shortie - Tap ShoeGirls Shortie - Starlight
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Step One is a leading direct-to-consumer online retailer for underwear. Step One offers an exclusive range of high quality, organically grown and certified, sustainable, and ethically manufactured underwear that suits a broad range of body types. Step One has transformed the underwear market with an innovative design and cult-like following and has quickly grown into a multinational company operating in Australia, the US and the UK.

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