The Easy Sip Straw Cup is widely regarded as spill-proof and leak-proof. Many customers note that children enjoy using it and find it easy to drink from, often highlighting the soft silicone straw. Ease of cleaning is a frequently mentioned positive aspect, with components often being dishwasher-safe and simple to disassemble. The cup is considered affordable and a good value. It is often recommended for aiding the transition from bottles or training cups. Its lightweight nature and appropriate size make it easy for small hands to hold, and its portability is appreciated for use at home or on the go. The cup's durability and quality are also noted. Some reviews mention the availability of various colors and the convenience of interchangeable lids with other Parent's Choice cups. Conversely, some users report that the cup is not consistently 100% spill-proof, especially when subjected to shaking or being thrown. A few customers indicate that some children found it difficult to use the straw or achieve proper suction. Concerns are also raised regarding the straw's susceptibility to chewing damage and the cleaning difficulty of certain anti-spill features. A small number of reviews express reservations about the product's overall quality.