Maximum Inside Perimeter: 10 inches (254 mm)

it's also designed for convenience

so take a moment to dial this in precisely

has a very wide head

keeping you warm without sacrificing breathability or moisture management

Boston Leather Correction Key Pouch 5438-1 Uniform Accessories Maximum Inside Perimeter: 10 inchesBoston Leather Correction Key Pouch 5438 1 This durable leather pouch holds Folger Adams keys on the upper hook, and standard keys on the lower. It not only hides key configurations, but also stops annoying rattling. It is made of genuine top grain leather that will last for years of use. https: www. bostonleather. com fitting guides