Industry-leading Aerogel insulation and innovative construction allow us to make these super-warm winter boots 50% lighter than traditional pac boots.
These are proof that extra-warm pac boots don't have to be bulky and heavy. Athletic shoe-inspired construction for comfortable walks in winter conditions. An efficient, lightweight combination of Aerogel and Primaloft insulations provides toasty warmth without a lot of weight. And our exclusive TEK 2.5 waterproof membrane seals out all moisture.