This product is a round-bottom sack made from Dyneema®︎ Composite Fabric (formerly Cuben Fiber) DCF. It's sized to fit the Jindaiji Mountain Works Hillbilly Pot 550 and the Yama no Utsuwa (large). Stacking and storing a Ziploc screw-lock container 400FD is also recommended. The screw-lock fits nicely when inserted at an angle. Compatible Cookware: : Jindaiji Mountain Works Hillbilly Pot 550 : Yama no Utsuwa : EVERNEW Ti 570FD Cup (without lid) : EVERNEW Ti U.L. Deep pot 640 【Material】Dyneema®︎ Composite Fabric 1.0oz Gray 【Cord Color】Teal ❼ (Cord color can be changed) 【Size】φ118mm x 148mm (height) 【Weight】4g The product includes the round sack only.