Most costumes marketed as "adult sized" still fit like a kid's Halloween outfit with a few extra inches tacked on.
What This Is
This is an officially licensed SEGA adult onesie featuring the Knuckles the Echidna design, a red hooded jumpsuit with a brushed fleece interior, side pockets, and a front zipper, sized and cut for adults rather
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This is the worst experience I’ve ever had with a seller. Order was lost, had to wait weeks for a refund, no contact information for the delivery service (they use DoorDash for some strange reason). I will never trust this vendor
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Trevor · October 28, 2026
I never got a notice that it shipped, or that it was out for delivery. But it was still exactly what I want.
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Spencer · October 24, 2026
Definitely be ordering from Opposuits
I ordered the Knickles costume and it came in just a few days and well packaged! I previously tried to order it through Amazon but it kept postponing my order. I ordered more than 4 weeks in advance! I was so upset because my husband and I and our two kiddos were dressing up as the Sonic the Hedgehog characters for our annual trick or treat. I was so happy I stumbled on Opposuits! I made the order and crossed my fingers it would come because there was only 4 days left until the truck or treat. It came on time! I will be ordering from Opposuits again!
