Review (4/5): Well made cups
Bought these to replace cups that were in a cupping kit. The original cups had orange plastic tops. Poorly constructed as cracks would develop along the valve area and the cups would no longer hold suction. Received these after a long shipping time (which the company said was going to happen - no surprise). They seem to be thicker. The black plastic valve also appears to be more substantial. I am hoping that they last longer than the originals. So far (over a month) they are as good as new.