I purchased this bottle in the 32 oz size and loved it so much I came back for more. The 32, while great was just a tad too large for day to day carrying around. The 25 oz is perfect. The design is comfortable to carry, the spill proof lid works wonderfully, the ease of drinking from the bottle is nice, and to top it all off the lid even offers a little mouth guard if you want to keep dust, grime, and dirt off of the drinking portion of the cap. I really like these bottles and I would certainly recommend these to anyone. I am now the proud owner of 4, although this may be more than I really need.