The Spika Gridfleece Zip Top can be layered as part of your winter layering system or as a stand alone garment. Featuring Gridfleece fabric which insulates and distributes body heat, if it is working to well and you need to dump excess heat the Neck Zipper allows you to vent quickly. The Gridfleece supports infield function with thumb loops and generous chest pocket. The mid layer Gridfleece top is a staple and versatile garment in your outdoor kit supporting you the majority of the year. The Gridfeece top is a packable jumper that is extremely warm for its weight, a go to piece for active pursuits in the mountains or for chilly mornings outside.