describe:Material: Nylon; Size: about 17.5cm (height) x 11cm (length) x 6cm (thickness)The double-pole umbrella is made of the highest quality nylon material. The double-pole umbrella has a strong safety belt at the back of the fastener to ensure long-term use in wet conditions.Multi-purpose, large capacity, integrated design. Loading and unloading goods is very easy. It is suitable for storing mobile phones, keychains, GPS devices, digital cameras, daily necessities, gadgets and other items under 6 inches that need to be accessed at any time.Suitable for many outdoor activities, such as hiking, climbing, fishing, running, cycling, etc.The package includes:1x belt bagnotes:1. Due to the difference in light and screen, the color of the product may be slightly different from the picture, please understand.2. There is a slight difference in manual measurement, please understand