[ Safety & Excellent Thermal Insulated ] The lunch bags adopt three-layer heat insulation design: the outer layer is made of waterproof and anti-tear oxford cloth, the inner layer is made of advanced, non toxic PEVA, an environmentally friendly, food safe material that's made without chlorine or plasticizers, BPA free, and the middle layer is made of thickened pearl cotton, so it can keep foods and drinks warm or cold for 4 - 6 hours and it is very easy to wipe clean. [ Dimensions ] 10.5 x 9 x 4 inch / 27 x 23 x 10cm (L x W x H). It can easily store 6-12 ounce cans, bento boxes, frozen meals, water bottles, and bulky containers.You can store your sandwichs, salad, snacks, drinks and fruits in one bag.It can fit all your lunch need. [ Multi-space ] This bag is designed with expandable side water bottle holder, front pocket with zipper, and inside mesh pockets with zipper to leave you with plenty room to pack all of your flatware, phone, phone charger, wallet, bus card keys, earphone etc. [ Convenient, 3 ways to carry ] The lunch bag is not only a handbag but also a shoulder bag, attach the adjustable shoulder strap to the rings at the vertical sides for hands-free carrying. You also can attach the lunch bag to your backpack or briefcase through the quick release buckle. [ Flexible and sturdy zippers ] High quality strengthened zipper,pull at will,don't worry about damage.All bags are equipped with zippers to prevent displacement.