Constructed of durable 100% polyester fabric. Tuck-away backpack straps with airmesh + foam: Comfort’s never been cooler. Fully-padded, dedicated laptop sleeve (Laptop Size = 17"). Closure Type: Zipper, Single-tube telescoping handle zips away. 360° reflectivity: Be bold. Be bright. Smooth-rolling, corner-mounted wheels. Pockets: Front accessory pocket with organizer for tech & keys. Side water bottle pocket. Water Resistance Level: Not Water Resistant