FOOD GRADE MATERIAL : The 20 packs Silicone food bags adopt food grade PEVA material, BPA free, 100% food safe and no odor. Whats more, this reusable food bag is degradable and using it can save hundreds of plastic bags one months. So lets get away with plastics storage bags and the colorful zipper of reusable sandwich bags will make your life more interesting and wonderful.LARGE QUANTITY & STURDY : The 20 packs colorful reusable food storage bags including 4 different sizes and colors. 6 small bags( 8.6*4.7 inches), 6 medium bags (8.6*7.2 inches), 6 larger bags (10.2*7.8 inches), 2 largest bags ( 11*11.8 inches). Because of large quantity, you can use different color bags to store different foods. And this reusable food bag is moisture-proof, has strong flexibility and tear resistance, so it can be used for a long time.LEAK PROOF & EASY SEAL DESIGN : The colorful food storage bags adopt double zip closures and upgrade anti-slip design, easy to seal and open. Well sealed design lets these reusable freezer bags have a great sealing effect, so the reusable snack bags perfectly keep food fresh, and the liquid will not leak from this reusable bag even upside down.FREEZER SAFE & EASY TO CLEAN : This reusable sandwich bag can be exposed in -70 degree, so it is very safe and you can put it into refrigerator with confidence, the well sealing can effectively keep food fresh and prevent odor from other things in the refrigerator. In order to protect zip seal, we advise you wash it by hand, and you can use common brush to clean it, last put sandwich bags on the top of cups or air dry.MULTIPLE USAGES : The reusable sandwich bags washable can be used to store various food like vegetables, fish, meat and juice, etc. Different colors can be used to store different foods, and these reusable snack bags can also be used to store things like cosmetics, jewelry, make-up, stationery, etc. Keep your things organized.