The Aluminum was sandwiched between two stainless steel layers. The bottom stainless steel layer is magnetic making this cookware induction compatible.
By Lafraise Seller on March 12, 2014

This set replaces another "set" of Induction Cookware that are not anywhere as good as the Duxtop set. I have a brand new induction cooktop as of November 15 2020, and the prior set that costs twice as much actually blew a circuit breaker one morning and it took me 3 weeks to get the top fixed and because it was under … see more This set replaces another "set" of Induction Cookware that are not anywhere as good as the Duxtop set. I have a brand new induction cooktop as of November 15 2020, and the prior set that costs twice as much actually blew a circuit breaker one morning and it took me 3 weeks to get the top fixed and because it was under warranty, I had some excellent help from the manufacturers rep/repair who said these pans are not just "induction ready" they actually make the induction cook system work the best! These pans heat up all the way, not just the bottom like the very expensive set that are now unused. if you are looking for induction cooktop pans, this is the best on the market, but only 1/3 the cost. Highly recommend them, but do look closely at the descriptions because not all SS pans are the same. see less This set replaces another "set" of Induction Cookware that are not anywhere as good as the Duxtop set. I have a brand new induction cooktop as of November 15 2020, and the prior set that costs twice as much actually blew a circuit breaker one morning and it took me 3 weeks to get the top fixed and because it was under warranty, I had some excellent help from the manufacturers rep/repair who said these pans are not just "induction ready" they actually make the induction cook system work the best! These pans heat up all the way, not just the bottom like the very expensive set that are now unused. if you are looking for induction cooktop pans, this is the best on the market, but only 1/3 the cost. Highly recommend them, but do look closely at the descriptions because not all SS pans are the same.
By Kindle Customer on November 3, 2020

China
By Bob Wash on April 7, 2018

The largest "traditional skillet" has a top rim to rim of diameter of 10" and bottom of diameter of 7"; however there is a pan without graded edges (unlike the skillet) with about 4" tall edges and the measurements of the base and top diameter that are are 10.75". I hope that helps.
By Brandon P on May 11, 2017