Lightweight, breathable top and pants set Just like busy kids, the toddlers' Lightweight Base Layer Set is designed to stretch, breathe, and dry quickly. It's the technical head-to-toe combo that'll keep your little ripper warm and dry whether they're on the mountain, the playground, or just sitting on the couch. Features: DRYRIDE Ultrawick is highly breathable and ultra-fast wicking to keep kids dry and warm. A regular fit, non-tech look, and a soft hand give them a casual, everyday feel that keeps kids comfy anywhere. Product meets Bluesign® approved safety and environmental standards in manufacturing.