The Nike Sportswear Tech Pack Vest features a translucent liner that highlights the synthetic marble insulation made from recycled plastic. A removable front pocket provides secure storage to keep your hands free all day. Removable Front Pocket Keep your camera, phone, or keys secure in the removable front pocket, which can be clipped on or worn as a bag. Thermore EcoDown Insulation Blown-in EcoDown insulation provides premium warmth comparable to natural down. Recycled PET bottles are broken down to create synthetic fibers that mimic the warmth and feel of down. Color: Black Size: M Style: CU3767-010 Available for immediate purchase, but returns are not accepted.