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my previous comments:
My SC sportseats came thru UPS or USP. . . I think they both charge a lot more if the weight gets over 40lbs; so, the guy who shipped them got tricky on the packaging. He reclined the seats so the base and the back were lined up. Then came a few layers of bubble-wrap, some cardboard, followed by some shrink-wrap, and a final layer of some black plastic (kinda hefty bag-ish).
The seats showed up at my doorstep looking like a couple of mummies. . . .and like mummies, they were well preserved.