Double-faced fleece is warmer than single-faced fleece. Because double-faced fleece has fleece on both sides, it traps heat better, making it warmer than single-faced fleece.

Warmth Comparison
Double-faced fleece: Because it has fleece on both sides, it quickly generates a warm feeling and has excellent warmth retention, making it especially suitable for use in cold winters.
Single-faced fleece: While it also has some warmth retention, it is slightly inferior to double-faced fleece.
Comfort and Durability Comparison
Comfort: Double-faced fleece is softer and more comfortable to the touch because it has fleece on both sides and is suitable for next-to-skin wear. Single-faced fleece only has fleece on one side, while the other side is smooth and more breathable, making it suitable for users who prioritize breathability.
Durability: Double-faced fleece is less prone to pilling and has a longer lifespan due to the fleece on both sides. Single-faced fleece tends to pill after washing, affecting its overall performance.