Find your fit

Start with the largest ring that stays in place without sliding. If it doesn’t hold, step down one size. The right ring feels firm and secure, never sharp, never numb. If you notice discomfort, tingling or a change in color, take it off and go up a size.

Size Inner Diameter Outer Width Full Length Band Thickness
1 — Smallest 0.65" (16.5 mm) 1.04" 2.01" 0.20"
2 0.75" (19.0 mm) 1.17" 2.52" 0.21"
3 0.85" (21.5 mm) 1.29" 2.76" 0.22"
4 0.91" (23.0 mm) 1.36" 3.00" 0.23"
5 1.00" (25.5 mm) 1.48" 3.25" 0.24"
6 — Largest 1.20" (30.5 mm) 1.71" 3.50" 0.26"
Full length measures the complete ring body including both grip wings, not the opening. Inner diameter is the measurement that matters for fit. Silicone stretches, so these are relaxed measurements.

Works With Your Pump

The rings load onto the cylinder before you start, so they are ready to transfer the moment you release the vacuum. Here is where they fit.

Your Lynk device Cylinder width Fits
Endurance Pro — 1.75” 1.75” Yes
Endurance Pro — 2.00” 2.00” Yes
Endurance Pro — 2.25” 2.25” Yes
Endurance Pro — 2.50” 2.50” Yes
Endurance Pro — 3.00” 3.00” No
The Champion Pump 2.30” Yes
The Powerhouse Pump 2.30” Yes
Precision Trigger Pump 2.30” Yes
Excelsior Pump (9” and 12”) 2.50” Yes