ROCKBROS Bicycle Bag Hard - shell Frame Bag with Phone Holder for Phones up to 6.5 inches, Water - resistant, 1.5L High - quality Materials ROCKBROS bicycle bags are made of high - density, robust materials that are extremely impact - resistant and water - resistant. Thus, your belongings stay safe and dry in any weather. 360° Rotatable Phone Holder The integrated silicone holder allows for a free 360 - degree rotation, enabling you to adjust the angle of your phone to the one you need the most. The holder is suitable for smartphones up to 6.5 inches in size. Practical 1.5L Capacity The bicycle bag offers sufficient space for daily needs. With a 1.5L capacity, it can easily store keys, wallets, mobile phones, and other small items. Double Zippers with Large Opening This bag is equipped with practical double zippers and a large opening, which facilitates access to your items. As a result, you can quickly and easily reach your articles. Safe and Easy Installation Secure the bicycle bag to your bike with three adjustable fastening straps. This ensures it remains stable and doesn't wobble.