The GSI Infinity Dukjug 1L is made from high quality plastic. The lid is made from HDPE.
The lid is easy open, even with gloves thanks to the cam-profile. The tether-cord is strong making it easy to clip to your backpack or anywhere else.
The waterbottle has a duct tape dogbone, meaning you can store 2 meters of duct tape without the tape sticking out. A silicone grip comes ontop giving you better grip when drinking and protecting the tape inside as well.