Buff Unisex Necklace Filter Tube | Black | M/L This buff is super unique as it has been designed with a neckband to ensure and exceptional thermal ratio while still being able to keep germs and bacteria at bay. It is a perfect fit and can be used in many different ways! It is light weight and breathable making it easy to use during sporting activities or just day to day running around. It can be washed and reused, making it super handy and great for the environment. Features Light weight   breathable fabric Multifunctional HeiQ V-Block technology Antimicrobial treatment applied to the mesh of the inner pocket Ergonomics Reusable and washable 95% recycled polyester, 5% elastane