I purchased to go with a 40 oz stanley and it fit, but not without struggle. I definitely cannot do it one handed. I had to turn it upside down and use both hands. It took some tugging to get on there all the way and I'm not 100% it is. I'm not able to get a tight seal/suction on the very bottom (maybe because of the air hole?).The gray color compliments my cup perfectly and that's why I'll more than likely keep it. It does seem thinner than other brands I purchased at the same time. Not bad over all, it's definitely not coming off the cup.
Segmented Beaded Kids Jump Rope For Exercise And Outdoor Activities - Durable And Shatterproof - Easily Adjustable And Light Weight Skipping Rope For Kids
48 Review
Metal Frame Night Driving Glasses For Men: BIRCEN HD Anti-Glare Night Vision Glasses For Safe Driving
47 Review
Stay Comfortable And Stylish With DASUTA Sweatbands For Women And Men
55 Review
6 Pcs Reflective Bands: High Visibility Running Gear For Women Men - Safety Straps Bracelets For Running, Cycling & Walking
46 Review