What does "Calor" mean you ask? It means heat, love, passion...all things you’ll experience with this pant. All the goodness of a quiet but durable softshell coupled with Heatwave Technology to give you those few extra degrees of warmth when you need them most. Ultra Quiet Water Resistant Softshell Construction Durable And Soft Tricot Lining Heatwave™ Ceramic Print For Additional Warmth 5 Secure Pockets Knee High Boot Zipper Keprotec® Reinforced Knees and Cuffs. Great pant for the Fall deer hunt. Excellent for still hunting, tree stand hunts . Keeps you warm from the wind and cold.