1. Multi-functional and practical: The main advantage is that it can be carried in containers of different sizes. The adjustable strap can perfectly accommodate 8 to 32-ounce water bottles, soda cans, coffee cups/glasses, stainless steel bottles, and large sports water bottles. - Great design! 2. Customizable water bottle holder: Suitable for any style or size of bicycle and easy to install. The Velcro strap is detachable, so the water bottle holder can adapt to the shape of the bicycle. 3. High-quality insulation material: Insulated inside to keep drinks cool in hot weather and warm in cold weather. It is made of high-quality 600D Oxford cloth, PEVA, and aluminum foil. It is lightweight, durable, and insulated. It has 4 reinforced adjustable Velcro straps and 9 different installation positions. No matter what type of bicycle you have, there is a place to firmly fix it. It can also hold your tools, snacks, glasses, chargers, and other small items. There are side pockets for easy access to your phone. There are loop holes on the side for hanging keys and small ornaments. It also comes with a detachable shoulder strap for you to carry around. 4. Package list: 1 * Water bottle bag. We only sell the water bottle bag and do not sell other items in the picture. Due to factors such as manual measurement and monitor differences, there may be slight differences between individual products and the picture.