The Universal Phone Adapter is a stick-on adapter suitable for all types of smartphones. This adapter is compatible with Zefal holders. The Universal Phone Adapter can be used with most types of phones and cases except ones made from rubber, silicon, TPU and other soft materials. To use, Choose a flat, non-porous surface (e.g. hard plastics) to attach the Universal Phone Adapter to but once it has been fit, it cannot be removed or reused. Not available in the USA.**Features:*** Universal: Compatible with all types of smartphones* 3M VHB Adhesive Tape: Softens vibrations and offers an extreme level of adhesion* Accessibility: Clip your phone in and out in seconds* Bi Material: The moulded casing makes it high strength and adaptable**Tech Specs:*** Material: Polyamides and TPU Moulded* Dimensions: 55x65.5mn / 2,2 x 2.6"* Weight: 70g