M-Series Core Size:One Size Inside of the lid has

Inside of the lid has a smooth conical shape for easy drinking until the last sip

It’s even got handy corner pockets for stashing essentials

Airmesh on backpack straps and back panel for comfortable carrying

The remote canister setup also delivers superior performance in cold weather

I bought these as a gift for my daughter & she loves them

M-Series Core Size:One Size Inside of the lid hasBuilt for the long run When the heat builds and the miles stack up, the FRACTEL M Series Cap is the one youll want on your head. Designed with the brands new PACE fabric, this cap is built for those who dont slow down delivering next level breathability, moisture control and all day comfort without sacrificing style. Made entirely from recycled yarns, its lightweight, tough and purpose built for movement. The structured front panel and pliable peak