This is an ultralight pouch. Large L size. Made of DuPont Tyvek, soft type. Handmade roll-top stuff sack. Weighs only about 25g! And it's made of waterproof and strong Tyvek. The fabric itself is waterproof, but water may enter through the seams. We recommend seam sealing the stitching yourself for better waterproofing. <Size> When laid flat *Please allow for a margin of error of about 5mm. H approx. 55cm W approx. 28.5cm It will be folded for shipping, so it will be wrinkled. This product is prone to wrinkles, and while there may be wrinkles from the manufacturing process, they do not affect the product's functionality. The position of the logo text on the back will vary for each item. Tyvek is gaining attention in the outdoor community for its incredible lightness and superior waterproofness and durability compared to any other material. Tyvek Features: 1. Breathability/Moisture Permeability 2. Water Resistance / Humidity Resistance 3. Water Pressure Resistance 4. Water Repellency 5. Lightness 6. Stain Resistance 7. Durability 8. Operating Temperature Range / Flammability 9. Opacity 10. Whiteness 11. Light Reflectivity 12. Low Linting 13. Static Electricity 14. Chemical Resistance 15. Solvent Resistance 16. Dustproofness 17. Fold Resistance 18. Thermal Conductivity 19. Important Notes As it is a non-woven fabric, there may be some variation in thickness due to the manufacturing process. Sheet Material: Tyvek, UL/Ultralight, Water Repellent Material: Tyvek