Description: Function:adjustable size, can place large volume kettle, beverage, etc Fit:Thermos / JBL 5 / 1L Cola / 1.5L mineral water Product information Small size Description: Perfect for a cup of coffee or for bringing along your favorite tunes. Cage height and diameter are adjustable to fit large sized tumblers or speakers. 1:Adjustable Length: Fits Height 175 - 240 mm / 6.9 - 9.4 2:Material: Engineering Grade Polymer / Rubber 3:Outer Diameter: Upper - Fits 75 - 90 mm / 2.9 - 3.5 Lower - Fits 60 - 78 mm / 2.4 - 3.1 4:Size: 19.4-21x9.4x9 cm / 7.6-8.3x3.7x3.5 5:Weight: 220 g / 7.73 oz Big size Description: Perfect for a cup of coffee or for bringing along your favorite tunes. Cage height and diameter are adjustable to fit slim type tumblers or speakers. 1:Adjustable Length: Fits Height 200 mm / 7.9 2:Material: Engineering Grade Polymer / Rubber 3:Outer Diameter: Upper - Fits 72 - 110 mm / 2.8 - 4.3 Lower - Fits 72 - 110 mm / 2.8 - 4.3 4:Weight: 330 g / 11.6 oz Adapter Size:about3.3*5.3*7.8cm Weight:about 100g Material: aluminum alloy Suitable diameter: 17-31mm Function: adjustable size, can place large volume kettle, beverage, etc Buyer shows Height And Diamater Are Adjustable Product Parameters