A handy collar and cuff expander for those tight shirts, which will add 1.5 - 2 sizes (approx. 19mm) to your collar. Simply place the existing button into the loop and its ready to fit. 3 x Individual Plastic Collar Expanders.
eBay
Freeacy Women's Extra-long Elegant T-shirt Luxury Gold Stand Collar Ruffled Sleeves High Waist Pleated Evening Wear Shirt Tops
Aliexpress UK
A handy collar and cuff expander for those tight shirts, which will add 1 size (approx. 1.0cm) to your collar. Simply place the existing button into the flexible spring loop and its ready to fit. Flexible spring Loop.
eBay
Spring and Autumn Youth Casual Long-sleeved Plaid Cardigan Thin Oxford Spinning Shirts Solid Color Spliced Square Collar Shirts
Aliexpress UK
2x Shirt Extender. Flexible Spring Loop. By communicating, we’ll find an agreeable solution to any problem. Colour: Silver, White.
eBay
Men's Shirt - New Spring-Autumn Style Business Casual Solid Check Pockets Design Collar Buttoned Long-Sleeved Shirt
Aliexpress UK
1 x Shirt Extender. Colour: Silver. Flexible Spring Loop. By communicating, we’ll find an agreeable solution to any problem.
eBay
New Men's Stand-up Collar Thickened Zipper Sweatshirt Jacket Men's Casual Jacquard Cardigan Sweatshirt
Aliexpress UK
Easy to Use: Simply attach Extension Buttons to the existing button on the clothes gives you quick for extra space, it's perfect to match with tie. Spring Extension Length: Approx. Comfort ＆ Breathe Easy: Those Extension Buttons can made your more comfortable to wear shirts, pants,etc.
eBay
New spring and autumn men's checkerboard checkered POLO shirt zip-up collar sports polo shirt
Aliexpress UK
Easy to Use: Simply attach Extension Buttons to the existing button on the clothes gives you quick for extra space, it's perfect to with tie. Spring Extension Length: Approx. Comfort ＆ Those Extension Buttons can made your more comfortable to wear shirts, pants And save money from replacing too tight clothes.
eBay
Fashion Men's Oversize High Collar Long Sleeves Autumn Winter Pure Thermal Shirt for Men Layering Stylish T-Shirt
Aliexpress UK
【Elastic extension buckle】No sew button extenders for jeans is made of high quality alloy, soft and durable, safe, non-toxic and odorless, long service life. Suitable for cuffs as well as collar extenders, can be used for shirts, skirts, pants, jackets, collars, pants, etc.
eBay
Casual Ethnic Style Men's Fashionable Slim Fit Long Sleeved Sweatshirt Black Trendy Versatile Small Stand Up Collar Shirt
Aliexpress UK
A handy collar and cuff expander for those tight shirts, which will add 1 size (approx. 1.0cm) to your collar. Simply place the existing button into the flexible spring loop and its ready to fit. Flexible spring Loop.
eBay
Bubble Sleeve Shirt Retro Square Collar Floral Shirt 2025 Spring Fashion Commuter Coat Women
Aliexpress UK