This is the SEA TO SUMMIT Ultra-Sil Nano Daypack. I purchased it two years ago, but I'm selling it because I haven't had a chance to use it. It's made of ultra-lightweight 15D nylon fabric and weighs only 30g, but it can hold up to 20kg. It's a small but strong and reliable daypack. When not in use, it packs down to the size of an egg and can be attached to a pocket or keychain, so you can always carry it with you. 【 SPEC / Product Specifications 】 ■ Brand Name: SEA TO SUMMIT ■ Product Name: Ultra-Sil Nano Daypack ■ Color: Red ■ Size: 28x20x48cm ■ Storage Size: 7 x 5 x 4.5cm ■ Material: 15D Nylon ■ Weight: 30g ■ Capacity: 18L