Score: 5/5
Durability: 5/5
Weight: 40g (without the little orange clip)
Capacity: 1L

This is the best collapsible water bottle I've ever seen. It's insanely durable and tough (I once saw a review video where a large man stood on one, to no effect) and when it's empty, it takes up practically no room in your pack, and only 40g on your back.