Why are turnouts bulky?

• A. Air trapped in thermal layers provides an insulating layer
• B. Heavy fabric weight increases bulkiness
• C. The moisture barrier adds mass
• D. The outer shell traps moisture

Answer: (A)

Turnout gear feels bulky because its layered construction traps air between the layers. This trapped air acts as an excellent insulator, slowing heat transfer and creating volume that makes the garment thick. The outer shell, moisture barrier, and thermal liner with padding all contribute to this layered stack, and the spaces between them hold air that adds both insulation and bulk. While heavier fabrics or moisture-related weight can add some heft, they’re not the primary reason for the bulk; the insulation provided by the trapped air within the multiple layers is what makes turnout gear feel bulky.