OTSO Trail Running Backpack Black & Orange (トレイルランニングバックパック ブラック×オレンジ ) Backpack Size:XS allowing it to fit snugly

allowing it to fit snugly on your head without the need for fasteners

and coat pockets

You'll forget you're even wearing it

allowing for unrestricted movement

right upper arm and upper back

OTSO Trail Running Backpack Black & Orange (トレイルランニングバックパック ブラック×オレンジ ) Backpack Size:XS allowing it to fit snuglyProduct specifications The new OTSO trail running backpack is a must have for your long adventures It redefines everything you carry, with a contoured design that lets you go further without worrying. Charge everything you need with less hassle After months of collaboration and testing with athletes, we developed fabrics and designs optimized for intense, prolonged use, following OTSO standards and focusing on ergonomics, comfort and breathability.