8 Main Points to watch for when viewing this video
(Point #1 contributes to Point #6)

1. Virgin grade materials - no regrind - best materials
2. 15 year warranty
3. The entire foaming process
4. Wall thickness testing
5. "Outer shell is properly cured so there are no air bubbles below the inside 1/3 of the wall thickness"
6. The ASTM D1998-04 Falling Dart Impact Test - 90 ft. lb. (standard) - hole in part without shattering is good - competitor coupon (sample piece) shattered at 90 ft. lb. and even 30 ft. lb. which means they probably are using "off spec" material / or heavy amount of regrind / adding color to cover up regrind / or all of the above. This is very important to durability of float as you can see. This also illustrates why ACE has the best warranty in the industry.
7. The Hunt 7 Day Water Absorption Test process
8. Tank testing process