Review on TPU Folding Flask: TRIWONDER Soft Flasks Collapsible Water Bottles For Hydration Pack - Ideal For Running, Hiking, Cycling & Climbing by Jerry Eintertainment

I use soft bottle for spare water on hikes. It’s lighter than carry an extra bottle. Only wish I could attach a Sawyer Mini but the opening and treads are not compatible. Also wish there was a compatible cap. Other than that, perfect lightweight option to nalgean or water bottles and doesn’t have a bad taste. Easy to clean. Only used one of the 2 pack and it’s seen several aggressive trips. Seems to be holding up. No leaks or rips/tears.