Bakertowne Waistband Stretcher and Extender Stretch Tight Pants and Jeans up to 5 inches - Walmart.com
Amazon.com: Waistband Stretcher - Heavy Duty - Easy to Use Instant Stretch - 22" to 35" Stretch Range - Also can Stretch Hats Sizes 6 3/4 to 8 1/2 : Everything Else
Pants Stretcher for Jeans with Aerial Aluminium Alloy Buckle Stretch 30" to 59" 709046898373 | eBay