Insulation and ice preservation -- Besides acting as a bike storage pouch,The bag can also be used as a cooler bag. It come with a layer of thick aluminum foil, which can achieve the effect of heat preservation and ice preservation, and keep the food or beverage you bring fresh. Sensitive touch screen -- Made of unique Polymer Material, the phone window of the handlebar bag is not only transparent and durable, but also sensitive to operate cellphone conveniently during riding. The clear large pouch with dimension of 8.3 x 4.7 inch (LxW), fit for all model of smart phone, GPS or maps. Large capacity -- WOTOW bike front bag has a large capacity of 4L, perfect to hold all items needed of daily riding, such as smartphone, water bottle, wallet, keys, glasses, bike repair tools, earbuds, lighters and other bike accessories. Whats more, it is designed with net bags on both sides, which is very convenient to sort and store your items. Water Resistant -- The bike bag is made from high-density 900D Polyester wax fabric, water repellent and durable. Mud and sewage can be cleaned by wiping easily. And the zipper is also water-resistant, help to prevent rain water from coming in through the teeth. Steady installation -- 3 hook and loop fastener install strap, help to fix the bag on bike in seconds. The unique designed super soft silicone surface, not only prevent your bike paint from scratching, but also is slide-proof to ensure more stable installation.