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Description
Optis Tubeless Tire Insert - 29" x 28-40mm Insert OnlyOPTIS (Odyssey Pneumatic Tire Insert System) is a lightweight, highly tunable, high efficiency, tubeless tire insert. Tire assemblies are one of the most important performance factors for any bike. They provide all the grip to the ground, they serve as a critical first element of the bikes suspension and they provide essential support to the cornering forces that the bike encounters. OPTIS separates the function of the bikes grip from its suspension
OPTIS (Odyssey Pneumatic Tire Insert System) is a lightweight, highly tunable, high-efficiency, tubeless tire insert. Tire assemblies are one of the most important performance factors for any bike. They provide all the grip to the ground, they serve as a critical first element of the bike’s suspension and they provide essential support to the cornering forces that the bike encounters. OPTIS separates the function of the bikeʼs grip from its suspension and stability by turning the tire into a two-chamber system. This allows for lower tire pressures while the insert is inflated to a higher pressure than the tire, keeping the tire supported while allowing the main volume to be at a lower pressure that provides optimum grip.- Riders can separately tune the tire's grip and internal support through a dual-valve design, allowing for lower tire pressures and ride characteristics that would not be possible with a traditional tubeless or foam insert set-up
- Instead of forming to the internal tire casing like an ordinary inner tube, OPTIS cinches down against the tire bead and hugs the rim when inflated. This creates a bead lock that prevents burping, protects the rim from impacts and offers a limited amount of run-flat protection when the tire is damaged or punctured
- OPTIS reduces rolling resistance by facilitating the use of lower pressures and lighter tires. Rolling efficiency is greatly improved on rough surfaces without the hysteresis losses often associated with foam inserts
- OPTIS is lightweight, adding less than 90g per wheel to an ordinary tubeless set-up and provides greater protection than traditional inserts that are much heavier
- Valve is constructed from Aluminum, Insert is made from Nylon and TPU (Thermoplastic Polyurethane)
- Designed to fit rims with 28 – 40mm internal width, at a maximum inflation of 50psi
Product Specifics
- Defined Color: Yellow
Today's Stock Status
10+ Available to ship in 2-4 Business Days
UPC: 630950941346
EAN: Not available
Manufacturer Part Number: ODT-502-291
TR00175 630220
195756-Q0-L
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Pampers Baby Dry are actually good again! Major upgrade.
Size: Size 3, Unit Count: 168
I’ve used Baby Dry off and on for a while, but the new “improved” version is a huge step up from the old design. They used to feel kind of generic, thin, boxy, and not great for active toddlers, but now they’re a real contender next to Swaddlers and Huggies Little Movers.
What’s new:
• The shape is much more like Swaddlers, snugger around the hips and legs, less floppy in the front.
• Tabs are noticeably stronger and stretchier.
• The inside has a new ultra cushiony top layer that feels soft and plush, not papery.
• They seem to have a slightly faster and more even absorbency, too.
• Still the same cute Sesame Street prints and blue inner layer, but the overall fit and quality feel more “premium.”
Size-wise, the new Baby Dry run a bit larger than Huggies size 3 but a touch smaller than Swaddlers size 3 so a great in-between fit.
For parents like us who can’t use 360-style pull-ons at daycare, these are perfect. They have tabs, fit toddlers well, and hold up to big pees without the sag or stiffness the old Baby Dry had.
Bottom line: a big win for Pampers these finally feel like a proper toddler diaper, not an expensive generic. Highly recommend giving them another try if you haven’t used them recently!
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Reviewed in the United States on October 19, 2025
★★★★★ 5
Reliable overnight protection with minimal leaks
Size: Size 6, Unit Count: 112
These have been very reliable for overnight use. They hold a lot without leaking, even after a full night of sleep. The fit is secure around the legs and waist without leaving marks. I also appreciate that they don’t have a strong scent. Compared to other brands I’ve tried, these seem to last longer before needing a change. Only minor downside is they can feel a bit bulky when very full, but that’s expected for the absorbency.
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Just works for us!
Size: Size 1, Unit Count: 44
Had to transfer from Huggies and Pura because our son kept leaking through those, despite trying all the tips and tricks.
Needless to say we’re really pleased with these! They’re WAY more absorbent. Only downside is that it’s not designed for sensitive skin, but diaper rash cream always does the trick for our little guy
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Love
Size: Size 5, Unit Count: 24, Size: Size 5, Unit Count: 24
Def my fave amongst the diapers, parents choice leak and these just don’t do that and they don’t leave a rash like some other off brands do
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Reviewed in the United States on May 24, 2026
★★★★★ 4
Outstanding, top of the line diaper!
Size: Size 1, Unit Count: 252
We normally use Huggies Little Movers with our 3.5 year old (nothing against them, they're also great diapers) but recently decided to give Swaddlers a try, and will not be going back. This is a top-of-the-line diaper and excels in all ways.
We use a size 7 though could *probably* get away with a size 6, and use about 4-5 diapers a day on average (not including his overnight diaper) depending on how much he's had to drink and how often he poops -usually once a day, but could be as many as 3 times, especially if he doesn't go one day.
The first thing you notice about these diapers is how soft they are. I mean, they just feel like they would be comfortable on a child, and since they're in them practically 24/7, that's important. The diaper is mostly white, and the overall designs are more muted than a lot of other diapers, with "Shilo and Friends" -an elephant and duck - on the front and back. I personally wouldn't mind something bolder, I don't think my child cares or even notices. There is a wetness indicator that goes down the length of the diaper, front and back. Nice to have I suppose for a caregiver who maybe doesn't change a lot of diapers, but at this age and stage, it's easy to know and tell. Like all Pampers diapers, they are scented. I happen to love the gentle powder-like scent, but it's a turn-off to some who describe it as too strong, and of course, if your child is sensitive to that, you may want to avoid Pampers diapers.
Inside, the top sheet liner keeps his skin dry, even when he wets heavily -which is usually - and does a good job of keeping poop from sticking to his bottom. The "blowout barrier" in the back also helps contain any messes. In terms of absorbency, I'm pretty amazed at how much they can hold. Being a little older, he tends to stay drier for longer periods and then pee a larger amount at one time, but the diaper almost always holds it in, and leaks are rare.
The one thing I wish that Pampers did do was have wider tapes, like Huggies, at least on the larger sizes, where kids are more active. It hasn't been a problem, so I don't really have a reason for saying that, other than that it seems like it would help with fit, but it certainly won't keep me from buying or using them in the future.
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Reviewed in the United States on October 21, 2023
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