VAUCLUSE Ultralight Ventilation Backpack Frames. Used once for everyday use. Washed, never used in the mountains. The VAUCLUSE ultralight backpack frame, which won the 2024 Up & Coming Gear Award from the US web media "GearJunkie." By attaching this frame to a backpack, a gap is created between the back and the backpack, reducing stuffiness. It also has moderate flexibility, providing rigidity to frameless backpacks and fitting the back. Weighing only 100g, it increases comfort on the journey. It's a fun UL item for us, allowing for various uses, such as creating a table for items you don't want to place directly on the ground, creating an air layer under a sleeping pad, or extending a short-sized pad. It can be attached to most backpacks from 15 to 45L. The maximum load capacity is 90kg, so it won't break easily. It can also be attached to backpacks larger than 45L, but the ventilation function may be reduced depending on the pack's shape. Set Contents ・Frame x 2 ・Tie wraps x 6 Body size: 39_21_3.6cm Torso length: 15-22 inches Compatible backpacks: 14-45L Weight capacity: 90kg Weight: 94g Material: FDA-approved recyclable plastic Please check the official website for usage conditions. https://vauclusegear.com/products/ultralight-ventilation-backpack-frame?srsltid=AfmBOorGPKx0YzLzuO0YTDFk9qa53bHP4XcwhVpb2QwJWqX3PfpctEY4 There is a video with a more detailed explanation by a shop in Japan, which may be helpful. https://www.youtube.com/watch?v=t7dD_4hFlgg We will ship with simple packaging, please understand. This is a used item. Please consider this before purchasing. No smokers, pets, or use of strong fragrance products.