The comfort of a hammock is greatly increased with the addition of a pillow. Made of DuraCord, this pillow will hold its color outside in the sun since this fabric is colorfast and has been augmented with UV protectant. The poly fiber filling is mildew resistant and provide the pillow with a great comfort level and quick drying capabilities. Bolster pillow features tie straps on the back while rectangle pillows offer velcro straps to secure it to the hammocks. Both are as comfortable as the other, simply choose the look you prefer. The bolster pillow offers a more modern look while the rectangle pillow is more traditional. All that is sure is that a hammock without a pillow has no soul. So get the best in comfort and look.