Warm sand, salty hair, shells in your pockets.
Meet Ultramarine — soft, breathable, perfect for summer..
10,000+ 5-Star Reviews
OEKO-TEX® certified
PFAS-Free
B-Corp certified
Shop Multi-Packs
Compare Our Leakproof Systems
Essential
Moderate coverage
Boost™
Adjustable coverage
Super
Heavy coverage
10,000+ 5 Star Reviews
At the forefront of leakproof design since 1993.
Soft, breathable and no leaks!
Perfect amount of protection
Great for overnight
High quality, super absorbent, and barely noticeable
My last pairs lasted 7 years!
Boxers
Available in 4 absorbencies
Hipsters
Available in 4 absorbencies
Thongs
Available in 1 absorbency
Briefs
Available in 4 absorbencies
Heavy + Overnight Protection
Designed with longer and wider front-to-back gusset coverage for leakproof coverage you can count on.
SUPER
Best for
Heavy flow & overnight for a leak free sleep
Features
Dual-layered gusset for extra absorbency. Boxers with front, back & down the leg coverage
Available styles
Boxer & Hipster
BOOST™
Best for
Change your absorbency, not your underwear with our easy-swap BOOSTER™
Features
Removable BOOSTER™ allows you to customize absorbency to fit your needs in the moment
Available styles
Boxer, Hipster, Brief
ESSENTIAL
Best for
Soft lightweight protection for moderate flow
Features
Ultra thin, absorbent gusset feels just like regular underwear
Available styles
Boxer, Hipster, Brief, Thong
PADS
Best for
Comfortable, affordable protection you can rely on
Features
Soft cotton gusset with quick-absorbing layers & edge-to-edge leak protection
Available styles
Mini, Maxi & Super Pad, Liner, Extended Liner
Related products
Leakproof Swimwear
Built to catch and lock-in those sneaky leaks that occur before and after you swim.
Made for Humans, By Humans
OEKO-TEX® certified
Our fabrics are certified free from harmful substances, gentler on skin, safer for long-term wear, ultimately, reducing irritation.
Stitched, not glued
Stitched seams hold up through 100+ washes. Bonded (glued) construction stretches out and breaks down over time.
PFAS-Free*
No PFAS or unnecessary chemical treatments in our leakproof layers, designed to be safe against your skin.