NOTE: FOR TUNE BELT PRODUCTS ONLY and is not recommended for other manufacturers" products. For those with waist sizes larger than 40 to 42 inches or for those wanting to wear the belt looser with not as tight of stretch to the neoprene belt, this SW Belt Extender increases the maximum waist size of the listed product size by about 10 to 12 inches. This SW Belt Extender only works with Tune Belt SKU #s: MB3, CD4, CD5, iP1 (080274102730), iP2, iP4 and iP5. Color: Black For US customers, we offer expedited shipping via USPS Priority Mail (2-4 days after shipping) or you can chose standard shipping via USPS First Class mail.