Lifetime Support: DJAIOD offers excellent customer service for these straw covers. If you have any issues or are unsatisfied with the product, please feel free to contact us anytime Tumbler Compatibility for Stanley: Include 3 pcs classic cute bow straw covers. Measuring 0.4 inches (10mm), these straw toppers fit perfectly with Stanley 30 oz and 40 oz tumblers. They are precisely sized to ensure a secure fit and prevent detachment during use Premium Quality: These bow straw covers are durable. They are reusable and easy to clean by hand or in the dishwasher Ideal for All Occasions: these cute straw covers are perfect for outdoor activities and adventures Charming Design: Featuring a creative cartoon design, these straw covers are both cute and decorative. They are ideal gifts for family members 3Pcs Pink Straw Cover for Stanley