This Reima BugProof crew sock repels mosquitoes and ticks with a biodegradable lemongrass-based finish (geraniol) that stays effective for more than 50 washes. This children's insect-repellent sock blends 74% organic cotton with polypropylene, polyamide and elastane for a breathable, moisture-wicking fit that moves with active kids. This elastic, crew-length pair provides soft cushioning and a snug cuff for comfortable all-day wear during parks, hikes and backyard play. This mild lemon fragrance is pleasant to people while deterring insects, helping families enjoy outdoor time with less worry. Remember to protect exposed skin with a repellent lotion, since clothing only shields covered areas—always read the label and product information before use.