Harder and thinner surfaces will work best, but you can make do with fluffy carpet pretty well. I can't speak for longevity beyond that but for this price I'd say it's totally worth it to buy. It works on all surfaces (I've tried on hardwood, thin/hard carpet, and fluffy carpet). I liked this product so much that I bought a second one so I could have one in each of my residences. I do a few sets every morning and I'm always seeing progress. I've had it for about a month or so. It really does work wonders because abs can be hard to train. The knee pad that comes with it is just okay, not the best on hard wood. Small rectangular foam kneeling mats will work awesome for a great price. This product really helps with the "hard to target" muscles.
I wear about a 31 normally, got the 32 and it fit great. This product fit fine and was just as advertised.
The swimsuit was shipped fast and on time. This bikini lifts and holds you comfortably in place. The fabric is holding up nicely. I am 5 feet 8 inches with a 30 waist and I ordered the lime green pouch bikini in a size small. I plan on getting more colors soon! ! !. I love this style of swimsuit so much more than traditional speedos where I feel compressed.
Great fit for wide feet, looks nice enough to wear to a casual restaurant or boardwalk after water play.
These are the best! ! They are supportive, comfortable and light! I am on my feet ALL DAY and couldn’t do it without these shoes.