The lower part of the Light My Fire Pack-Up Bottle collapses for easy packing while you travel, camp, and backpack. This bottle is dishwasher and microwave safe, giving you the freedom to carry and transport hot liquids without melting the bottle itself. The bottle's standard size cap is easy to drink from and allows you to attach a compatible water filter, and the top carrying loop attaches to a carabiner for easy transport on your pack.