I wear size 42 jeans so I ordered a size up (44) as recommended. Received a size 44-46 and fits loosely on the last notch although the quality is good.
π Premium Plastic Collar Stays - Assorted Sizes in Crisp White Finish
9 Review
π Ultimate Flexibility with Premium Extender Expandable Elastic America Men's Accessories
9 Review
40 Metal Collar Stays Box
9 Review
Stiffs Wurkin: Premium π Assorted Brass Collar for Polished Style
9 Review