Altitude Briefs

Favourite undies

I've been wearing io merino undies for a few years and i keep buying them. Great design, and quality, I've tried other brands but they don't last like these. Very comfy thanks io merino !!!!

Absolutely The Best Briefs

These are absolutely the best briefs I have ever worn. I love the full coverage hipster cut of these briefs. I have searched for years for Merino Wool briefs that fit this well. I'm from the US and have tried Merino briefs from major brands like smartwool and from lesser known brands from the EU as well as other Australian brands. The other brands either contained little wool or were terrible cuts. I love Merino because it doesn't get soggy and smelly like cotton in the summer and isn't suffocating like nylon and polyester. Merino is really an all year fabric for me even in the hot southern US. I only wear high wool content shirts, socks and underwear for year round comfort that doesn't stink. These Altitude briefs fit great and hold everything in place no matter the level of activity, whether running, hiking, kayaking or sitting at my office desk. I hope IO never changes the design of these briefs. I will be a forever customer for these briefs!

Husband says very comfy

Bought these for my husband who has advised they are super comfortable and breathable Will be buying more shortly to replace all his current underwear