Sipper doesn't flow properly After much examination, there appears to be something wrong with the little membrane next to the sipper. The sipper stops working, and if you tap on the membrane it somehow seems to clear it, and it starts working again. For the money, this shouldn't be happening.

Great product, but... I love that Tempercraft includes the drink spout and ring. With our other insulated bottles, we had to buy separate accessories. My only problem I experienced was a weird taste that didn't go away after the first or second wash. I used dish soap and hot water but the taste remained. I eventually used white vinegar then baking soda and water to remove whatever was in the bottle.

Great insulation and pretty good quality The growler I bought has amazing insulation and works great. The only thing I'm a little worried about is the plastic top which seems a bit thin and doesn't feel like it will last very long. It's also a little difficult to pour because it's big and takes two hands to pour and the flip top falls into the pouring area so it would be nice if it had some sort of spring to hold it open. Other than those things, I love it and might get another.

Versatile & Durable Versatile because I use it for hot coffee for mid-morning coffee break then cold water in the afternoon. Durable because it holds up to banging, dropping and being thrown around at a jobsite. No dents to report. That's the 18 oz bottle. We also got the 40 oz "thermos" -- great for keeping coffee hot all morning while fishing on my boat. Great products -- Ken from Brentwood CA

Best Bottle Yet!!!! I love this 32 oz bottle! I've been through Kleen Kanteens, Nalgenes, etc, but this is my favorite. The lid rocks, has a nice little grab handle you could throw a carabiner on, leakproof, etc. 4 stars b/c when I dropped it on the street, it slightly cracked at the base, I'm hoping b/c of coating (which I love), rather than the insulated outer layer:/ Also, I wish the loop for grabbing/holding was softer and larger, similar to Nalgene's. AWESOME customer service!!!!!!