This is a standard UL stuff sack set from Sea to Summit. It uses ultra-lightweight 30D Ultra-Sil nylon. This model is perfect for lightweight packing organization for UL hiking, mountaineering, thru-hiking, and backpacking. This set includes three different sizes: 5L (approx. 25g), 8L (approx. 32g), and 13L (approx. 40g). It's convenient for sorting clothes, down jackets, rainwear, and small items, improving organization efficiency inside your pack. * Brand: Sea to Summit * Model: Ultra-Sil Stuff Sack Set * Capacity: 5L / 8L / 13L * Weight: Approx. 25g / Approx. 32g / Approx. 40g * Material: 30D Ultra-Sil nylon * Uses: UL mountaineering, trail, camping, backpacking Recommended for those looking for UL gear with a focus on lightweight. #UL #ultralight #ULgear #lightweightgear #lightweighting #mountaineering #mountaineeringequipment #mountaineeringgear #thru-hiking #backpacking #hiking #trekking #camping #stuffsack #drybag #waterproofbag #waterproofstuffsack #packingorganization #seatosummit #SeaToSummit #EXPED #exped #montbell #montbell #osprey #OSPREY #granitegear #GraniteGear #drysack