Nike Workout Gear. DURABLE MEETS VERSATILE The Nike Alpha Adapt Big Kids' Crossbody Duffel Bag offers powerful durability and multiple carrying options for practice days or weekend trips. Durable Construction The heavyweight polyester body makes the bag ideal for long-term use. The bottom features a polyurethane coating for added protection on wet surfaces. Easy Organization A vented wet/dry compartment helps keep you gear organized before and after practice. Versatile Comfort A removable, adjustable strap with Max Air cushioning gives you three carrying options: behind your back, over your shoulder or by the bag's dual handles. More Details Internal plush-lined pocket stores small valuables Dual-zip main compartment offers spacious storage Materials: 100% Polyester Dimensions 20"L x 11"W x 10"H Style: BA5257; Color: Black/Black/White; Size: ONE SIZE; Gender: Kids Unisex Great for Baseball / Softball ; Volleyball ; Lacrosse ; Training & Gym ; Track & Field ; Basketball ; Running ; Football.