95% Modal means it's soft for the boys, breathable, and extra supportive. Strategically placed spandex keeps everything in the right place all day.
Signature Fly 40º
Our 40º side-fly makes access easier and allows for a quick draw. We've changed men's trunks for the better, check the reviews yourself.
No bunching. No messing-around.
Our premium waistband sits comfortably and leaves zero marks. The AllDay collection doesn't ride or bunch up, leaving you comfortable all day.
It's all about the details
Comfort Like Never Before
Every BYLT garment is rigorously tested before it’s shown to the world. Only the highest level of durability, flexibility stretch and compression make the cut because BYLT believes that your legacy begins with premium basics.
Our All-Day Trunks command freedom. It's time to say 'goodbye' to uncomfortable bunching, pinching, riding up, overheating, and stop letting 'adjustment' hold you back during a long day no matter where you were.
We treat you right, every order.
Trust us, we're on your team.
It's critical to us that you're happy with your purchase and that you love the items you receive. The premium quality and value of BYLT Basics™ are obvious as soon as you put them on.
We know things happen, if - for any reason - you're not 100% satisfied, we'll try our hardest to make it right. Our dedicated support staff is standing by to exchange, return or answer questions. If it is your first order and you're not completely in love, it's on us!
Bought an Allday-Flex Bundle 4 pack. Tried them on the day they arrived and immediately went online to purchase another 4-pack. The Alldays are super soft. The Flex are more like moisture-wicking sport briefs but still very soft. Both keep you dry all day and are great for either work or working out. The colors are slick too. These are easily the best and most comfortable trunks I've ever owned.
my boyfriend can’t stop thanking me for the bylt all day flex i got him a year ago xmas. i got him a bundle this xmas and he was psyched. we’re 24. so we get psyched about ****** but he tells me all the time he’ll never get another brand bc the opening is very convenient for men.