Lululemon Engineered Warmth Jacket Poseidon / Black: Designed to perform on any outdoor adventure, this Merino Wool-blend full zip is a technical layer for your cold-weather wardrobe. Engineered knit creates a 3-D texture for added warmth, while four-way stretch fabric allows for a full range of motion. merino wool Merino Wool is naturally thermoregulating and soft against your skin. Naturally thermoregulating Soft features Designed for: Training Secure storage: Zippered pocket with a hidden phone sleeve Smoke free pet free home Barely worn in EXCELLENT condition