SkiTrab skins use a clever little tip and tail attachment system for their pre-cut skins. The Attivo attachments are only compatible with SkiTrab skis. About compatibility:Skins are compatible interchangeably between the following models: Maestro.2, Stelvio 76, Gavia 76 Magico.2, Stelvio 85, Gavia 85, Ortles 85 Mistico.2, Ortles 90 Gara WC skins: Race skins with Attivo.2 attachment kit pre-installed. Maestro.2 skins: 100% mohair climbing skins with Attivo 2 kit. Trimmed to exact length. Compatible with Maestro.2, Gavia 76 and Stelvio 76 skis. Magico.2 skins: 100% mohair climbing skins with Attivo 2 kit. Trimmed to exact length. Compatible with Magico.2, Ortles, Stelvio 85 and Gavia 85 skis. Magico.2 Gara WC skins: 100% mohair RACE thickness climbing skins with Attivo 2 kit. Trimmed to exact length. Compatible with Magico.2, Ortles, Stelvio 85 and Gavia 85 skis. Stelvio 76 skins: 65% mohair climbing skins with Attivo 2 kit. Trimmed to exact length. Compatible with Maestro.2, Stelvio 76 and Gavia 76 skis. Stelvio 85 skins: 65% mohair climbing skins with Attivo 2 kit. Trimmed to exact length. Compatible with Magico.2, Stelvio 85 and Gavia 85 skis. Maximo 90 skins: 65% mohair climbing skins with Attivo kit. Trimmed to exact length. Compatible with Maximo and Mistico skis. Supermaximo Skins: 65% mohair climbing skins with Attivo kit. Trimmed to exact length. Compatible with Supermaximo skis. Ortles 90: 65% mohair or 100% mohair options with Attivo Kit. Trimmed to exact length. Compatible with Ortles 90.