7x15x16 travel backpack Nixjoro 40x30x15cm Personal Item Bag Carry On Flight Approved with Anti-Theft Pocket Water-resistant Casual Daypack for Weekender Business Hiking,Blue : Clothing, Shoes & Jewelry Vintage Trek Bicycle Head a loop for holding Choose Option:Reservoir 2 Liters Blue tec_XPROTECTSW_RL_SP

7x15x16 travel backpack Nixjoro 40x30x15cm Personal Item Bag Carry On Flight Approved with Anti-Theft Pocket Water-resistant Casual Daypack for Weekender Business Hiking,Blue : Clothing, Shoes & Jewelry Vintage Trek Bicycle Head a loop for holding Choose Option:Reservoir 2 Liters Blue tec_XPROTECTSW_RL_SP

Vintage Trek Bicycle Head Badge Brass 1980s Road Bike Frame Emblem Headbadge | eBay

With any other water reservoir models, you would need to find a way to squeeze the hose under the shoulder strap to stay in place during the walk

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Choose Option:Reservoir 2 Liters Blue

One of the things I love about Osprey is they create similar but unique bags, specially for men and women, knowing that backpacks fit differently

a loop for holding glasses on shoulder straps