Beta SL Jacket: Lightweight highly versatile Gore-Tex ePE shell Beta: Versatile: high performance for diverse activities and conditions. Trail: For technical mountain activities, durable and protective designs with a focus on freedom of movement for remote and varied conditions. Superlight: Superlight materials and design, emphasizing lightweight and packability over durability. Gore-Tex: Waterproof, windproof and breathable textiles that offer fully protective environmental shelter.