The BIOS Short Linerless
Size Guide
The BIOS Short Linerless Size Guide
Fit Profile | Classic fit
Actual Fit | True to Size
MEN'S BOTTOMS
| Alpha Size | Numeric Size | Waist (cm) | Hip (cm) |
|---|---|---|---|
| Small | 30-31 | 81.28 – 83.82 | 96.52 – 99.06 |
| Medium | 32-33 | 86.36 – 88.9 | 101.6 – 104.14 |
| Large | 34 | 91.44 – 93.98 | 106.68 – 109.22 |
| X-Large | 36 | 96.52 – 99.06 | 111.76 – 114.3 |
| 2X-Large | 38 | 101.6 – 104.14 | 116.84 – 119.38 |
| 3X-Large | 40 | 106.68 – 111.76 | 121.92 – 124.46 |
For product-specific inseam lengths, please reference the Product Features section on the product page.
How to Measure
Waist - Measure the circumference at the smallest point of your waist.
Hips - Measure the circumference at the fullest point of your hips.
Couldn't load pickup availability
One short, perfected for every occasion—from a hike to social hour or a quick swim. The all-adventure short blends tech-forward design with an elevated look, transitioning seamlessly between activities. With a new fabric blend for stretch and durability, and targeted vents with mesh pockets for breathability, it’s the short you can always depend on.
Add your fit and features content here.
Add your fabric and care content here.

![Navy [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/BIOS_Short_7__Linerless_Navy_0807_4ecbd45b-ca5f-44e6-8a1d-a6ac0d319f74.jpg?v=1762345154&width=850)
![Navy [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Navy_13510_39cc65f3-f20f-440a-8597-453d43404f95.jpg?v=1762345155&width=840)
![Navy [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Navy_13526.jpg?v=1762345158&width=840)
![Navy [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Navy_13513_042b879d-1fab-449c-8074-714259481dde.jpg?v=1762345159&width=840)
![Navy [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Navy_13515_f601a962-24da-4de7-a2a1-51b0c66147ef.jpg?v=1762345161&width=840)
![Navy [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Navy_13522_cf305b8a-0585-4f40-9a4c-3fb651d445cd.jpg?v=1762345163&width=840)
![Black [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/BIOS_Short_7__Linerless_Black_0803_1_88512fd0-fc20-487b-91e5-539567367a47.jpg?v=1762345173&width=850)
![Black [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Black_13492_0569725d-915e-46d8-a769-ff5a8f926fe6.jpg?v=1762345175&width=840)
![Black [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Black_13483_b6cec9b5-e502-48a1-af6f-178edf8fedfb.jpg?v=1762345177&width=840)
![Black [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Black_13498_8b6ef0b3-d645-4ffa-8e8a-a1d786280918.jpg?v=1762345179&width=840)
![Black [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Black_13500_ce2989a1-15cc-43a2-abc2-0b7f0d4ca193.jpg?v=1762345180&width=840)
![Black [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Black_13507_41f1058c-5dcf-4305-bd52-f32ff834dbc1.jpg?v=1762345182&width=840)
![Charcoal [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/BIOS_Short_7__Linerless_Charcoal_0814_1_4e836e10-dce3-4503-96a9-2ca9473d04a5.jpg?v=1762345184&width=850)
![Charcoal [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Charcoal_13294_d1b47650-73aa-49b4-a914-185b5ce30f44.jpg?v=1762345186&width=840)
![Charcoal [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Charcoal_13314.jpg?v=1762345187&width=840)
![Charcoal [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Charcoal_13299_242bc316-990b-4a4d-89ef-7b8bc83a06e8.jpg?v=1762345189&width=840)
![Charcoal [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Charcoal_13302_a3b5e06a-6434-4381-998a-5c4bc6c4d248.jpg?v=1762345191&width=840)
![Charcoal [inseam - 7"]](http://www.byltbasics.com.au/cdn/shop/files/D1BiosShorts7_Charcoal_13308_2a083e79-9876-4c7e-9084-9dfd136bee89.jpg?v=1762345192&width=840)