Portwest Mens Aran Full Zip Fleece Top Polyester, , Middleweight fleece is fantastic value for money and can be worn as part of a uniform or for leisure activities to provide extra warmth when needed. The anit-pill finish maintains the look of the garment for longer. Fabric: 100% Polyester. Weight: 280gsm. S, M, L, XL, 2XL, 3XL, 4XL* (36/38, 40/41, 42/44, 46/48, 50/52, 54/55, 56/58) 4XL only available in Navy.