First Line Period Boy Shorts - Black Rainbow Logo
Now offering our best selling Cotton Boy Shorts in our First Line Collection. No leaks, no mess, no worries. First Line is designed to help keep you dry and on-the-go with confidence. With built-in leak protection for light days or incontinence, you’ll be able to relax, move, and breathe easy. Our First Line Period Boy Short features a floating gusset that can fit a pad with wings for some extra coverage when you need it. Finished with water resistant foldover elastic and threads. Constructed with a new and improved wider and longer pad for increased absorbency. And, now you can machine wash and dry without a fuss.
First Line underwear is made with OEKO-TEX® 100 Certified fabrics which is one of the world's best-known labels for textiles tested for harmful substances. Learn more about how we avoid chemicals in our products.
- Inclusive sizing from XS-6X
- 95% OEKO-TEX Certified cotton, 5% spandex
- Lining: 89% Polyester, 11% Spandex
- Inner Floating Liner: 91% Polyester, 9% Spandex
- Absorbs up to 6 tsps of liquid
- Signature stay-put silky soft waistband
- Mid rise fit, 2.5" inseam
- Smooth, durable flatlock seams won’t irritate or chafe
- Machine wash cold, tumble dry low.

Machine Wash Cold with like colors
Tumble Dry Low with like colors
All product life span is improved with hand wash and lay flat drying, but if
you don’t have the ability or time, delicate wash in your washing machine is fine and low tumble in the dryer. This also extends the life of your prints.
High heat can damage the spandex and break it down or lose the retention quality.
For any technical fabrics, fabric softeners break down the performance properties. Stay away from added fabric softeners, in general.
For more details on things like our glow-in-the-dark prints, swim, Solarmesh, etc. please see our Wash & Care Guide.