Lululemon Insculpt Reversible Vest Size: 8 EUC (no snags or pilling) Keep your core cozy post-practice in this reversible vest. Spacer fabric is the future of post-sweat layering. The double-bonded fabric has an inside layer that wicks away sweat, and an outer layer that protects you from the elements. Keep your core cozy post-practice in this reversible vest. Spacer Is sweat-wicking to help you feel cool and dry.