How is this product different from that which can be found in Grandma’s 1950s kitchen?

Grandma probably has linoleum that was supplied in a sheet-type format, and then glued to her subfloor. It may have also contained asbestos. Eco-Friendly linoleum floating floors are sold in 3′ x 1′ x 7/16″ floating floor planks that are completely re-usable, replaceable, and are installed without the use of glue or nails.