Come and see our amazing products. The drawstring bags are mainly made of quality 600 D polyester, wwhich is lightweight but thick and sturdy, and the sewing is also very strong. The gym backpack features a waterproof coating which helps a lot to protect the water from getting into the drawstring bag and avoids making your things inside get wet. The backpacks are portable, foldable, and easy to carry, convenient for your storage when not needed, drawstring backpacks will accompany you for a long time. Backpack measures 16"x13".Fits for most occasions such as home, gym, office, mall, supermarket, school, sport, yoga, dance, parties, camping, shopping, biking, hiking, teamwork, training, and daily travel. Quantity over 3K shipping by sea. Drawstring design with waterproof inner bag, portable design easy to carry. Pls confirm with us about the packing info, stock color and exact production time before placing your order.