Hey all--I noticed there wasn't a topic for this saddle yet, and I fully understand why. It is One of the most expensive AliX saddles. That said, after owning one for about 6 months, I figured it's time to share some thoughts because it's a brilliant saddle.
As far as I know, it is a unique design: it isn't available from other sellers (I have looked), wholesalers, or any copy of an existing saddle. The product page is here:
https://www.oniriibike.com/products/2025-new-onirii-triathlon-tt-3d-printed-saddle-one-tt-road-time-trial-cycling-sea-carbon-fiber-ultralight-t-for-triathlon-bikeFor the sake of this short review post, I am going to compare it to three similar short saddles that I have: the Specialized SWorks Power Mimic (not 3d printed), the Fizik Vento Argo Adaptive R1, and the Syncros Belcara TT. I have other saddles, including some unpadded ones, but these are probably similar to what folks looking for a short saddle they can slam forward to get into a TT position on a road bike are looking for.
The shell of this saddle is really hard, and the padding is extremely stiff. The 3D-printed padding is much firmer than that of any other saddle. The texture of the 3d printing provides a medium grip. It's about as grippy as the Fizik but less than the Syncros. Setting up the saddle, i expected it to be a bad experience. Luckily for me, the shape of this saddle really works for me.
The saddle itself is flat and wide, going out to 132 mm. It's also extremely short: while it is 240mm long, the extended carbon "tail" means that it's really closer to 220mm saddle. Sort of similar to the actual seating area on a Selle SMP Well the saddle's usable sitting area ends at a taper of around 55mm. Unlike the SMP, Fizik, and Syncros saddles mentioned, it's much flatter, more like the power. However, it more or less lacks the nose of that saddle, so if you liked the Power but battled numbness even with the softer-nosed mimic, this saddle could be for you.
I previously also preferred the channel approach of the Fizik Antares Vs. Evo Adaptive saddle, which this saddle also offers, creating another respite for those of us who worry about numbness on long rides. It is also worth noting that while this saddle has very long rails the actual area indicated for clamping seems to only allow you to move forward 5-8mm vs. other short saddles. So it's something, but not as much as you might think looking at a profile of the saddle. Of course, you can always try to use that extra rail. I probably will.
I would love to see a V2 of this saddle with slightly softer padding and extending the clamping area enough to fully jam the saddle forward. That said, this current version is going on my gravel race rig 2026. In my opinion, if you are looking for a short saddle for a forward position and can get this one for a reasonable price, it might be worth a try.
EDIT: Can we move this to the components section of the board? I meant to post it there, and it looks like I can't delete it.
