Hold on a sec. What is "-4 at altitude" (I'm spanish) That means it was -4ºC at 13.000 ft? Last saturday, in Huesca (Spain) we jumped at -25ºC (13.000ft). That was too hard. First jump, when we landed, my fingers were freeze and I had to shake them before picking parachute up. The video cam guy couldn't take her helmet off for continuing recording the tandem. We jumped three times. :-) Regards Mariano. www.velocidadvertical.com