【SUITABLE FOR DIY】:The material of these drawstring backpack is 100% polyester and accepts the sublimation. It's easy to use a household iron to make it.Apply with a heat transfer machine or household irons(Do not use steam iron). Temperature Control: 150°C to 250°C, or choose the temperature for Cotton Materials directly. Ironing Time： Around 15 to 20 seconds. You can print any logo or pattern on it for company promotions, or sports team.This item is not intended for use by 12 and under. 【LIGHTWEIGHT&MACHINE WASHABLE】: Our sports bag is made of washable polyester fabric, it is a lightweight and quick-drying fabric. PU-reinforced corners that are also very sturdy, so you can machine wash this drawstring bag. Recommend mild detergent and hang to dry! 【DURABLE】Our drawstring bag is made from polyester fabric, so they are shape-retaining strongly.And the sewing of the drawstring bags is strong, which makes them more sturdy to hold heavy stuff safely and not easy to tear. 【A BAG FOR ALL ACTIVITIES】 The gym backpack for men and women has various colors, which can meet your color needs. Our sports backpack is suitable for many occasions, such as camping, picnic, party, gym, swimming, climbing, hiking, dancing, shopping, etc. Regardless of adults, both men and women can use the string bag to carry your items, and the draw string bag will simplify your life. 【FIT SIZE & LARGE CAPACITY】: The drawstring bags measure w 13.4 inches * h 16.5 inches which are big enough for carrying a variety of items, and perfect for everyday use. Great size to carry around water bottles, clothe, accessories, snacks, etc. Our gym backpack is also an ideal choice for a birthday party, fair prizes, carnival, construction giveaways, and so on. 1.Our drawstring gym cinch bags are perfect for many parties, like camping , birthday , wedding , as s bags and goodie bags. Each set of these pack of drawstring bags have 20 solid color bags. Great for many different occasions. 2.These drawstring backpack sack can fit a surprising amount of items inside such as gloves, resistance bands and so on. Our personalized draw string back pack bags have bright colors which are ideal gifts for Thanksgiving, Christmas, New Year's Eve, birthday, etc. 3.These drawstring backpack bookpack bags are goodies, you can use our draw string back pack bags as gift bags for a team, you can print their names and numbers on these bags that they would be a huge hit! Our gym sack bag drawstring backpacks are also suitable for all men and women, so these string cinch bags are an ideal choice for gifts. 4.You can also stuff our cinch backpack bags with warm things like socks, food, water, etc. to give out to the homeless for them to reuse so that if other people gave them things or they found items, they could have something to carry while still having their hands free.5.This item is not intended for use by 12 and under.