About this item polyester ? Durability and Insulation: Crafted from high-quality three-layer fabric, two layers of water-resistant polyester and a layer of reflective insulation sandwiched between, our water bottle sling bag safeguards your containers from scratches. The reflective insulation ensures your beverages stay at the desired temperature, be it hot or cold. ? Fits Cup with Handle: water bottle sling bag with strap and phone pocket fits not only normal cups but also those with handle like Stanley tumbler 40 oz and 30 oz stanley cup. The side zipper designed for handle makes it easy to keep your tumbler cup in your cup holder. It's a ideal gift for stanley cup lovers. ? Large Capacity & Adjustable shoulder strap: With dimensions of 5" x 5" x 11", our water bottle sling bag accommodates a wide range of vacuum bottles, sports bottles, and feeding bottles, ranging from 30oz to 40oz. Featuring detachable handles and an adjustable shoulder strap, our bottle carrier provides two convenient ways to carry it. Whether in hand or across your body, it suits all body types. ? Multiple Pockets: Our water bottle sling carrier offers ample space for your essentials. The main pocket with a drawstring closure easily accommodates your bottle, while a front phone pocket with a key hook and interior compartment keep your smartphone, cards, keys, and more. a slip-in side pocket is perfect for snacks or tissue. ? Versatile Use: Ideal for kids and adults, this versatile bag is perfect for walks, hikes, camping, beach trips, and various outdoor activities. You don't need to carry a large bag to hold your water bottle when you go gym, yoga, beach and park, all you need is a FNOLIA water bottle bag. Stay organized and hydrated wherever you go.