IDEAL SIZE -Drawstring backpacks come in one size 15.5"X13.5” Great for travel, schoolbooks, and charity giveaways DURABLE- Mato & Hash drawstring bags are 100% 210 denier polyester- made with PVC reinforced corners, added metal eyelets for extra durability and strength to last that everyday wear and tear. WATER RESISTANT- Protect your items in style. Cinch bags are woven with 210D Polyester giving you a protective shield to keep your items dry.