Spyder bitsy tart infants girls ski pants the spyder bitsy tart infants girls ski pants are designed to offer protection and comfort in the coldest of conditions the trousers feature 3m thinsulate insulation to allow superior protection the pants boats a waterproof rating of 10 000 mm and breathability rating of 10 000 gm sq the ski pants feature velcro straps that go over the shoulders and velcro fastening around the waist for a secure and comfortable fit the pants also benefit from the