The white overcoat has a standing collar that covers Blaze's neck. Its fabric is thicker than any other type of fabric that he has seen. However, it is not heavy at all, keeping the wearer light on his feet.
The shoulder of the coat looks rectangular, two shoulder pads were built into the overcoat stealthily. For untrained eyes, they won't be able to notice there is a pad under the fabric.
The pads are also present at the elbow. Silver fabric covers that part instead of staying hidden like the shoulder, emphasizing the arms.
The skirt of the cloak stays motionless even when Blaze moves at high speed, it precisely stays within his sides, avoiding any flourish movement that may hinder his attacks or cover his vision.
From every aspect, this is a battle cloak specialized for use in melee combat.