Get long-sleeve protection and casual vibes in the Fleet Feet Tri-Blend Long Sleeve T-shirt. The Fleet Feet Tri-Blend Long Sleeve is perfect for layering in the cold. The soft fabric feels cozy next to skin, and the long-sleeve style gives you more insulation when the temperature dips. When you’re looking for a long-sleeve T-shirt with a laid-back fit, the Fleet Feet Tri-Blend Long Sleeve delivers.