Feature: 100% new brand and high quality Made of premium silicone, non-toxic, harmless, totally safe and reliable material Strong resistance to harsh condition like high low temperature and abrasion through year to year, the one with service life Longer than ordinary twice or more Fit your hydro flask Ideal size for 32 and 40oz wide mouth flasks. Set your mind at ease to purchase without fit worries Description: Material:Silicone Color:As picture shown Size:As picture shown Package Included:1 X Bottle Sleeve Note: Transition: 1cm=10mm=0.39inch Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you