Each bottle belt comes with two silicone grips:

• Adjustable silicone grip - perfect for large tumbler cups/large bottles
• Silicone grip - perfect for any types of water bottles that have diameter of greater than 6.5cm. Such as any Owala, Yeti, Hydroflask, Montogo, Nalgene, Camelback, Sttoke cup, Thermos, Starbucks cup, etc. 

Features:

• Holds bottles up to 24kg, including full stainless tumblers.
  
• Covered by our limited lifetime warranty.
  
• Add on our extension strap to sling it over the shoulders or cross-body. 
• Add on our metal phone attachment if you want to use it for your mobile phone.