1970's, a long time ago for most people alive today. Even a 40 year old person today would have no memory of living in that time period! This ad shows how the product was marketed and why Tiger Underwear is "Like You Wore Before"
The proof of just how popular double-seat briefs can be found by thumbing through old department store catalogs from the 1960's, 70's and 80's as shown above.
While researching "Men's 1960's Underwear", this image from an online archive website was discovered, help validating the popularity of double-seat briefs.