We purchased a (different) cooling Mitteez teether that ended up having a defect. When we contacted Mitteez, the owner sent us a few different replacements (and gave us advice for continuing to use the original teether safely). This teether has become our son's favourite teether by far. The ring is the perfect size for his little hands and he loves chewing on both the wood and the crinkly "bunny ears" (which also absorb his drool. Not only does this company stand by what they sell and offer the best customer service, their teethers seem to be exactly what my baby needs to feel better.