I've had one for the past year and I love it. Works well, not too difficult to hand wash. My friends are amused by my baby bottle for grown ups. hahaha.

Used mine this past weekend. Love it... Works very well.

Been using the camekbak bottle for a few months now - its excellent and well worth the 12$

We just bought a pair of their new stainless insulated ones. I have to have my water cold so I can put some ice in it have it stay cold for hours to days.

Two of them here, the 0.75L plastic versions. There is a small round relief valve on the top which somehow fell out of one of our bottles. Camelbak warranty service quickly mailed out a replacement lid no questions asked. Great customer service!

After using them extensively for the last year I am still more comfortable with a 1L Nalgene with a splash guard installed. Easier to clean and less parts to break. I swear the Camelbak has leaked at times -- I've never had a Nalgene leak. So the Camelbaks have been relegated to around the house or town use, and the Nalgenes kept for the trail.