Features Mesh Twin link sternum strap system Two exterior side zip pockets Chest pocket Back compartment Zip back pocket Description Product Description The Salomon S-Lab Advanced Skin 3 5 Set hydration pack is equipped to get elite runners safely through shorter endurance races. 30% lighter and with less binding than its predecessor, this form-fitting pack offers stable hydration through front flasks and a bladder-ready back sleeve. Updated pockets and zips stow your gear, while reflective hits, a pole holder, whistle and safety blanket make this pack a champ of a race partner.