What are the dimensions of sleeve?

Thank you for your inquiry. The Dr. Brown's Narrow 100% Silicone Baby Bottle Sleeve, Mint, 8oz dimensions are 5 1/2" H and 2 1/2" D

How long can this product be used?

Thank you for your inquiry. Please contact Dr. Brown’s customer service at 800-778-9001 Mon-Fri 8:00am – 4:30pm CST so we may further assist with your inquiry.

How long can this product be used?

Thank you for your inquiry. Please contact Dr. Brown’s customer service at 800-778-9001 Mon-Fri 8:00am – 4:30pm CST so we may further assist with your inquiry.

Son para cuello ancho O delgado?

Thank you for your inquiry. The Dr. Brown's Narrow 100% Silicone Baby Bottle Sleeve, Pink, 4oz are compatible with the Dr. Brown's standard/narrow bottles and not the wide neck.