Don’t let the name “Basix” fool you — this isn’t boring underwear. The Undergear Basix Brief is a comfort-first men’s cotton brief made to upgrade your everyday rotation with better fit, better stretch, and colors that keep things from feeling same-old.
Built with a thick stretch-cotton fabric, this brief fits snug to the body for steady support without feeling restrictive. The full-coverage design makes it an easy grab for daily wear—comfortable, practical, and made to move with you from morning to night.
Why you’ll reach for it on repeat
Soft, thick stretch cotton that feels supportive and comfortable
Snug fit that stays in place (no bunching, no constant adjusting)
Full coverage for everyday confidence
Multiple styles & colors to switch up your routine
Material: 95% Cotton / 5% Spandex — breathable comfort with the right amount of stretch.
Is this men’s cotton brief?
Yes — it’s a men’s cotton brief made from 95% cotton with 5% spandex for stretch.
Does it feel tight or restrictive?
It’s designed for a snug, supportive fit, but the spandex adds flexibility so it stays comfortable while you move.
Is it good for everyday wear?
Absolutely. The full-coverage fit and breathable fabric make it a solid daily essential.
| Bottoms | |||||
| Size | S | M | L | XL | XXL |
| Waist | 28" - 30" | 32" - 34" | 36" - 38" | 40" - 42" | 44" - 46" |
| Tops | |||||
| Size | S | M | L | XL | XXL |
| Chest | 34" - 36" | 38" - 40" | 42" - 44" | 46" - 48" | 50" - 52" |
| Long Sleeve Dress Shirts | ||||||
| Size | M | L | XL | XXL | 3X | 4X |
| Chest | 44" | 47" | 50" | 53" | 56" | 60" |
| Sleeve Length | 34" | 35" | 36-37" | 36-37" | 36-37" | 36-37" |
| Waist | 41" | 45" | 47" | 50" | 55" | 58" |
| Collar | 3.5cm | 3.5cm | 3.5cm | 3.5cm | 3.5cm | 3.5cm |
Free shipping is available on all orders over $50 within the United States.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item, only in the case of:
– Received the wrong item.
– Item arrived not as expected (ie. damaged packaging).
– Item had defects.
– Over delivery time.
– The shipper does not allow the goods to be inspected before payment.
The returned product(s) must be in the original packaging, safety wrapped, undamaged and unworn. This means that the item(s) must be safely packed in a carton box for protection during transport, possibly the same carton used to ship to you as a customer.
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