EXTENDABLE PICNIC MAT:its maximum openable length is 79 x width 57 inches,enough to accommodate 2-6 adults,and also can be folded into a handbag with the size 12''x8''. Convenient handle and small folding size make it easy to carry.WATERPROOF & SANDPROOF: The bottom material is waterproof to make it great for use on grass or whenever the ground is damp because it prevents moisture from coming through. It's also good in sand because this won't collect sand like a regular it's easy to shake off the sand and then fold it up when you're done using it.FOLDABLE & EASY TO CLEAN:Follow up our folding guide,easily folds up to a compact size with a carry handle for transport. After the event,wipe the waterproof backing with a towel and shake off mulch, sand, grass, or dirt on the surface(Please DONOT wash in washing machine)MULTI-FUNCTIONAL:Perfect for picnics, camping, hiking, beach days, backyard play, tailgate parties, BBQs, outdoor concerts etc. outdoor activities,Also makes a perfect baby crawling mat or child play mat.SATISFACTION GUARANTEED: We strive to offer customer service, If you have any doubts in the use process, please contact us as soon as possible. You can receive a full refund if you're not completely satisfied!（Note:There will be a certain taste when unpacking. Please open it for ventilation, which will not affect the use.)