It's never too early to start teaching your son the benefits of environmental stewardship. The Patagonia Infant Boys' Retro X Fleece Jacket helps you keep your little one warm in the winter months while also keeping him more eco friendly with a partially recycled polyester build. Zip him up in this snuggly fleece jacket, and watch him transform into a cuddly little monkey. Half inch thick fleece prevents warm air from escaping his little body, and the windproof lining prevents cold air from getting in. The tapered collar gives his chins plenty of room, so you can zip this jacket all the up way and not worry about irritating his delicious skin.