The Sea To Summit backpack liner is a waterproof bag made of polyester and polyurethane. It has a volume of 70 liters and comes in the size M. The bag is designed for storing clothes, shoes, and equipment. With a weight of just 98 grams, it is lightweight yet durable. Ultimate Waterproof Protection. This backpack liner provides ultimate waterproof protection for your belongings. Whether you're hiking in the rain or crossing rivers, you can trust that your clothes, shoes, and gear will stay dry and safe inside this bag. Waterproof Material: Made of polyester and polyurethane, this bag is completely waterproof, ensuring that no water gets in. Durable Construction: Despite its lightweight design, this backpack liner is built to last. It can withstand rough outdoor conditions without tearing or breaking. Spacious Capacity: With a volume of 70 liters, this bag offers plenty of space to store all your essentials. It can easily accommodate clothing layers, shoes, and even some camping equipment. Easy Packing & Organization: The large opening makes it easy to pack and access your belongings. Additionally, the spacious interior allows for efficient organization of your items. Whether you're embarking on a multi-day hike or traveling to rainy destinations, the Sea To Summit backpack liner is an essential accessory to keep your belongings dry and protected. Its lightweight design and superior waterproof performance make it the perfect choice for outdoor enthusiasts