【NOT TRANSPARENT】All drawstring backpacks are made of polyester with reinforced PU leather corners. The material is thick, feels durable but is soft, not wrinkled, lightweight fabric that is also VERY sturdy and can withstand daily wear and tear^【GREAT VALUE】Cinch backpack includes 8 drawstring backpacks in different bright colors (yellow, orange, light green, red, magenta, neon green, sky blue, royal blue) which are very vibrant and suitable for most themes^【DRAWSTRING DESIGN】Drawstring backpacks for gym are easy to adjust, drawstring backpack has 2 straps on each side, and the bottom corners are reinforced with triangular PU leather with 2 metal grommets. You can pull the string to close the bag, then it can become a backpack.^【PERFECT SIZE】The string bag is approx 13.4 inches long and 16.9 inches wide, it's large enough to carry your items such as water bottle, shoes, clothes etc. suitable for most kids and adults, also a great replacement option for plastic and paper bags!^【WIDE USAGE】Drawstring backpacks in bulk are perfect for soccer teams, music festivals, carnivals, family picnics, school graduation, birthday party, lightweight backpack for marathon, short trips, drawstring backpacks can be used as a traditional backpack, gym bag, drawstring travel bag_tfrf