These straps are not US sized, they are smaller; You must order one size up. If you're 40, maybe 42 will do. When I found out that I would have to pay a restocking fee for the return, I decided not to order from this company.
Stiffs Wurkin: Premium π Assorted Brass Collar for Polished Style
9 Review
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
220 Plastic π Collar Stays for Organized Closet
9 Review