Lululemon women's Long-Sleeve Crewneck Base Layer in black, size 6. Pre-owned and in good condition. First things first: this warm long-sleeve base layer. it's designed in soft, breathable fabric to keep you comfortable during cold outdoor treks. Soft, four-way stretch jersey Fabric has a hint of wool for added warmth. Added elaatne improves stretch and shape retention. Thumbholes help keep your sleeves down for easy layering. Tight fit, hip length. Fabric is derived from responsibly sourced wood-based materials.