The Zippered Side Opening Makes It Easy To Access Your Things In The Main Compartment, Even When The Backpack Is Fully Packed. There’S A Separate Compartment In The Back That Holds A 15” Computer. The Adjustable And Padded Shoulder Straps Keep The Backpack Firmly And Comfortably In Place On The Back. The Backpack Has A Handy Outer Compartment Where You Can Keep For Example, Keys And Mobile Phone, So It Is Easy To Find And To Access Your Things. There’S Space For Both A Water Bottle And A Larger Umbrella In The Side Pockets. The Backpack Fabric Is Water-Resistant.