Lacrosse Reversible Practice Jersey Jersey Pinnies. Comfort & Style in 100% Polyester Mesh Fabric Wisks Away, Resistant and Stain Release. 3.4 ounces per square yard of ultra tight knit resists snagging and delivers excellent breathability and shape retention. Pinnies are available in 11 Reversible Colors in 10 Youth & Adult Sizes Reversible Jersey's Used by Lacrosse Players for Practice and Training Our 3.4 ounce polyester mesh delivers excellent breathability and garment shape retention