Nickel free but will start to stretch after a few weeks of daily wear. It prevents your pants from tearing when you bend at the waist, but it doesn't hold your pants like a regular belt. However, it is much better than no belt at all.
Stiffs Wurkin: Premium π Assorted Brass Collar for Polished Style
9 Review
π Ultimate Flexibility with Premium Extender Expandable Elastic America Men's Accessories
9 Review
π Premium Plastic Collar Stays - Assorted Sizes in Crisp White Finish
9 Review
𧲠Wurkin Stiffs Plastic Magnetic Men's Accessories and Collar Stays for Stiff N Stay
8 Review