AQUAPHILE Insulated Tumbler with Leak-proof Lid and Straw, 40 oz Insulated Stainless Steel Coffee Mug with Handle, Travel Coffee Mug，Lavender

Love this cup. Beats the price of the popular brand version. The only thing I would change is the STRAW OPENING on the lid. Unlike some reviewers (even with poor hand strength) I had no issue turning/opening the lid. (There may have been a design modification.) The cup has a tight seal and comes with 3 straw options (2 metal styles, 1 standard plastic a straw cleaner). I find it to be well insulated, keeping liquids cool all day. However, the STRAW OPENING is slightly large and liquids can spill if it tips over in your tote. 2 plastic tips are provided for use (not black as featured). I suppose these are meant to resolve "part" of the spill issue, but in my opinion, they are impractical for use due to their small size (similar to a plastic cigar tip) with nowhere to hang or attach while drinking. My solution was to purchase a variety set of attachable (40mm) straw covers online -- ones with the ring that slides down the straw with connected cap. While these still don't fit as snuggly as I would like, I feel more confident about spillag. I still take precaution, keeping my cup in an upright position or outside pocket of my tote.