My wife loves these merino wool leggings. They definitely keep them warm under the pants from the rain and wind. However, they are oversized and the leggings will stretch with repeated wear. Consider downsizing
Comfortable & Practical City Threads Underwear: Sensitive-Friendly Boys' Clothing
47 Review
π Russell Athletic FreshForce Protection: Boost Your Boys' Performance with Assorted Clothing
49 Review
π Brix Boys Long Sleeve Tees - Optimized Clothing for Boys
42 Review
Comfortable & Durable: Lucky & Me Noah π©² Boys Boxer Shorts 5 Pack - 100% Cotton Tagless Underwear
49 Review
Arctix Youth Pants Reinforced: Large Boys' Clothing for Active Adventures
46 Review
Boys' Adidas Active Sports Tricot Athletic Clothing
45 Review
π₯ Stay Warm and Active with Rocky Fleece Thermal Underwear Bottoms for Boys
44 Review
π Fruit of the Loom 6 Pair Cushion Ankle Boys' Clothing: Comfy and Stylish Selection for Active Boys
57 Review