REI Garage offers the Mountain Hardwear Men's Microchill 2.0 Zip T-Shirt in several colors (Dark Fire pictured) for $37.73. In-cart, that drops to $28.30. Choose in-store pickup to dodge the $5.99 shipping fee. That's the lowest price we could find by around $10. It comes in select sizes from M to XXL. Deal ends December 9.