Geo-Pro – Hot Chilly’s geo-pro material is used on their most casual looking base layers. Similar to the look and feel of your favorite t-shirts while retaining the technical superiority you need for activity. Made of MTF (Moisture Transfer Fibers) polyester yarns that aim to keep you dry and protected from chafing.

Moisture Transfer Fibers – Hot Chillys® exclusive MTF technology moves moisture away from your body, keeping you warm, dry, and comfortable.

Flatlock Seams – Flatlock Seams are used in athletic garments to create a smooth, chafe-free seam for maximum comfort.

Ultraviolet Protection Factor 30+ – The UPF rating is important because it tells you how much your garment can protect you from the Suns’ harmful UV rays. A UPF rating of 30+ indicates that your garment blocks 96% or more of the UV rays that fall on the exterior fabric.

Warmth Rating: 7 – Hot Chilly's uses their own warmth rating scale from 6-10 - 6 being the lightest weight materials and 10 being the warmest.