Insulated Drink Container Cooler Bag：

【Special Insulated Aluminum Material】 With a special aluminum material, our stem bag is insulated to keep your drinks cool in hot summer and warm in winter.
【Quick & Easy Access By One Hand】 Attaches to the bike Trunk our bike water bottle holder bag allows you access to water bottle, beer，snacks，tools very quickly and easily
【Durable & Easy To Clean】 Use the polyester fabric which is more durable than other fabric, our water bottle bag is prefect for outdoor bike riding