Technically, spacer knits are double-layered circular knits with a cushion of air and “spring-like” yarns between the two sides. This unique fabric construction is knit in one continuous operation. Although it looks multiple fabrics bonded together, it is actually one. Spacetex I is a 2 mm thick Spacer ( air knit) Interlock fabric with phenomenal stretch and recovery properties. Spacetex I is also highly breathable making it the perfect medical seating fabric.