Grandchildren used in the reconnaissance camp at single-digit intervals every night. He wore two pairs with a Boy Scout uniform over them. Only remove your uniform before climbing into your sleeping bag at night. Alongside teenage and 20's daywear with gusts of 25-35mph, he wore a jacket and then his double lined HEAVY coat. He was warm enough for the whole trip so his discomfort was the least! I'm not doing this underwear justice, the key was the multiple layers. Heat packs for legs and arms etc etc but they worked fine for sleeping in his zero temp sleeping bag. also had a zero degree tent.
π Russell Athletic FreshForce Protection: Boost Your Boys' Performance with Assorted Clothing
49 Review
Pack of 6 Baby Soft Cotton Underwear for Little Boys - Dinosaur Briefs, Toddler Shark Undies, Children Truck Panties
41 Review
Comfortable & Durable: Lucky & Me Noah π©² Boys Boxer Shorts 5 Pack - 100% Cotton Tagless Underwear
49 Review
πͺ 3T Boys Training Underwear: Comfortable and Durable Toddler Underwear
41 Review
π Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
47 Review
Boys' Adidas Active Sports Tricot Athletic Clothing
45 Review
Arctix Youth Pants Reinforced: Large Boys' Clothing for Active Adventures
46 Review
π Fruit of the Loom 6 Pair Cushion Ankle Boys' Clothing: Comfy and Stylish Selection for Active Boys
57 Review