Overview: The product can be customized with a logo, please contact customer service for details Material: Silicone Color 4th generation: black/white/grey Product size 4th generation: 3*1.6*1.5CM Product weight 4th generation: 5G; 4th generation 2-pack 15.2G; 4th generation 6-pack 39G If you have special requirements for the product, packaging method, or labeling, please contact customer service For products with customized logos or packaging, our company does not accept refunds or returns after the customer has confirmed the sample image.