Poly Cotton Blend This blend combines the best of two fabrics into one attractive and incredibly soft crew neck tee. Our most popular short sleeve shirt for good reason – it just always seems to have that perfect fit. Standard Fit. Materials 60% Combed Ringspun Cotton 40% Polyester Wild Tribute donates 4% of proceeds back to organizations that support our national parks and public lands. With your support, our 4% donations have now eclipsed $1,000,000. This is our wild tribute. Together, we have helped the Yosemite Conservancy fund the No Limits program for disabled athletes. We have helped the Zion Forever Project protect the park's desert bighorn sheep. We have helped the Whiskeytown National Recreation Area rebuild after the devastating wildfire in 2018. We have helped the National Forest Foundation plant 50 million trees. The list goes on.