The 40g of PrimaLoft Black ECO insulation is just warm enough, so you won't shiver in the cold, but won't overheat from the sweat you work up out there, with a thigh ventilation system to cool things down a bit more whenever necessary. Articulated through the knees for that proper, unrestricted knee bend as you dig in with your edges and cut left, then right. Adjustable through the waist so they won't squeeze too tight, while also featuring belt loops so they won't slip too low.