Two cups can look identical and behave completely differently, and hardness is almost always why. This is the one spec that matters more than most buyers realize before their first order, and it's worth understanding properly rather than guessing.
What "hardness" actually means
Hardness in silicone is measured on a durometer scale: a number describing how much a material resists being indented. Higher numbers mean a firmer, more rigid material; lower numbers mean something softer and more pliable. Most silicone products fall somewhere in the 40 to 70 range, and cupping cups typically sit in a narrower band within that, which is exactly why a jump of only five points, from 55 to 60, can feel more dramatic in your hand than the numbers alone suggest.
This matters practically because hardness determines two things at once: how easy the cup is to compress and control, and how much suction it holds once it's sealed to the skin.
The three levels
55 hardness is the softest of the three. It's the easiest to compress by hand, which makes it forgiving for beginners and well suited to gliding, dynamic work where the cup needs to move smoothly across the skin without gripping too aggressively. Lighter suction also makes it the more conservative choice for sensitive areas or clients who bruise easily.
60 hardness sits in the middle and, for that reason, tends to be the default most practitioners reach for. It holds a firmer seal than 55 while still being manageable for gliding technique, which is why it works reasonably well across both static and dynamic work rather than excelling narrowly at one.
65 hardness is the firmest option and the least forgiving to compress by hand. It holds the strongest, most stable suction, which makes it the choice for static placement where you want a cup to stay put and hold deep suction over several minutes, but that same rigidity makes it a poor fit for gliding technique; a cup this firm doesn't move smoothly across skin the way a softer one does.
Matching hardness to technique
| Technique | Best-fit hardness | Why |
|---|---|---|
| Dynamic / gliding | 55 | Compresses easily, moves smoothly, gentler suction |
| Mixed static and dynamic | 60 | Firm enough to hold static placement, still manageable for gliding |
| Static / stationary only | 65 | Strongest, most stable suction; not meant to move |
This isn't a rigid rule. Plenty of practitioners do static work with a 60-hardness cup, and client sensitivity or the treatment area often matters as much as the technique itself. Treat this as a starting point for a decision you'll refine with experience, not a fixed prescription.
One thing worth knowing before you order
Not every hardness level is available in every cup shape. Our Base Cupping Sets come in the full range, 55, 60, and 65. The Dome Cupping Set, by contrast, is available in 60 only; the 65-hardness version was discontinued specifically for that shape because the rigidity made it too difficult to use effectively for gliding-style dome work. That's a shape-specific limitation, not a sign that 65 hardness generally is being phased out, since it remains available in the Base Cupping Set line.
Building a working set
If you're starting from nothing, a 55 and a 60 Base Cupping Set together will cover the large majority of client needs: the 55 for gliding and sensitive work, the 60 as your everyday default for mixed sessions. Add a 65 once static, deep-hold work becomes a regular enough part of your practice to justify a cup built specifically for it, rather than starting there.
Reviewed by the Global Cupping Team
