Durability: The cups are thick and feel robust, indicating they're designed to last. Quantity: With 30 in a pack, there are ample cups for multiple projects. Material: Being made of plastic, they're resistant to certain solvents and chemicals typically found in paints. Disadvantages:
Not Leak-Proof: Over time, paint or other liquids may dry out due to the cups not being completely sealed. Not for Long-Term Storage: Given the lack of a tight seal, it might not be the best choice for storing paints or other liquids for extended periods. Conclusion: While the 30 Pack Paint Mix Cups with Lids provide value, especially in bulk projects, they might not be the best solution for long-term storage of liquids, especially paints that can dry out.