"Great service great product."
"I was really impressed with the sealed packaging and impressed with the ring, it wasn’t exactly like the pic but still very nice looking. Shipping to NZ was pretty quick considering we are nearly coming to Christmas. Was just a shame I got the wrong size. Hubby doesn’t wear his original ring due to work and sports so I thought this would be a good substitute, however I didn’t realise his finger was thinner from when we first got married. So you would be better to measure the finger not a ring. I’m yet to start the exchange process but I’m hoping that will go without any issues."
"Not a great depiction of what the ring really looks like. Not the first time I have bought a ring from these guys that looks nothing like the image on the website. The ring seems to be good quality though.nHowever, to be fair, their service in rectifying the previous matter was very prompt and very easy."
"Great quality product, looks great!"
"Replaced my husbands titanium wedding band with the silicone ring and he loves it. He’s able to wear it everyday and safely work with all the power tools he needs during the day. Highly recommended!"
"Good product with excellent packaging perfect for a gift"
"Amazing product and extremely comfortable. . .nThank you! nWill definitely purchase all further products through Mens Rings Online."
Built to break safely.
Medical-grade silicone — engineered for the worksite, the gym, the rope-pull, the rock face. Non-conductive. Designed to release under tension before your finger does.
Almost weightless
You'll forget you're wearing it. Made from medical-grade flexible silicone that conforms to your finger and stays comfortable for 12-hour shifts.
Ring-avulsion safe
Engineered to tear at roughly 25kg of pull-force — well below what it takes to degglove a finger. Tradies, electricians, climbers, lifters: this is the ring you wear when the metal one comes off. Non-conductive, too.
Days warranty
Silicone doesn't last a lifetime and we won't pretend it does. 30-day replacement warranty on tears, splits, or manufacturing defects. After that, swap it for a fresh one — they're built to be replaceable.
Every ring arrives ready.
- Branded pouchSlim Helix pouch — toss it in the gym bag or glovebox.
- Online fit guideSilicone is flexible — measure at home with a string or paper strip, our guide walks you through it in two minutes.
- 30-day warrantyTears, splits, or defects in the first 30 days — we replace it, no questions.
- Free exchange*Free swap on rings over $99 ($10 fee under $99). Tracked Australia Post on dispatch.
The specs.
- Material
- Silicone
- Width
- 8.7mm
- Colour
- Grey
- Available sizes
- 7 / N.5 – 14 / Z+3
- Model
- SIR025-COSMOS-GREY
Not sure of your size?
Silicone is flexible — but the right size makes a real difference for comfort. Three ways to check before you order.
The details.
The Cosmos Grey silicone ring is a clean, flat-profile ring in a muted grey tone, understated, masculine, and ready for any environment. Made from premium medical-grade silicone, it is sweat-proof, waterproof, and non-conductive for safe use at the gym, on the tools, or in the water. The smooth surface and neutral grey tone give a versatile look that works with any outfit. Silicone rings break away under extreme pressure, protecting your finger during heavy physical activity. A reliable everyday ring for active men who want simplicity and performance.
What 7 owners actually say.
Average rating 4.7 / 5 across 7 verified reviews.
Customer Reviews
Ring size guide.
Measure the inside diameter of a ring that already fits. Print the chart 100% scale or use a tape to check inner circumference.
| AU / UK | US | Diameter (mm) | Circumference (mm) |
|---|---|---|---|
| G | 3½ | 14.1 | 44.2 |
| H | 4 | 14.5 | 45.5 |
| I | 4½ | 14.9 | 46.8 |
| J | 5 | 15.3 | 48.0 |
| K | 5½ | 15.7 | 49.3 |
| L | 6 | 16.1 | 50.6 |
| M | 6½ | 16.5 | 51.9 |
| N | 7 | 16.9 | 53.1 |
| O | 7½ | 17.3 | 54.4 |
| P | 8 | 17.7 | 55.7 |
| Q | 8½ | 18.2 | 57.0 |
| R | 9 | 18.6 | 58.3 |
| S | 9½ | 19.0 | 59.5 |
| T | 10 | 19.4 | 60.8 |
| U | 10½ | 19.8 | 62.1 |
| V | 11 | 20.2 | 63.4 |
| W | 11½ | 20.6 | 64.6 |
| X | 12 | 21.0 | 65.9 |
| Y | 12½ | 21.4 | 67.2 |
| Z | 13 | 21.8 | 68.5 |