https://bit.ly/RideNowInserts - In Stock Now
In theory tubeless inserts are a great idea. If you get a flat, your tire is less likely to fall off the rim, they protect the rim from impacts and if you have no way to repair your puncture or reinflate your tire, in theory you can ride home on a flat tire.

However, they're a bit of a pain in the arse to install, and you're adding 45g per tire (so 90g) to the bike. However, it's a lot easier to stomach when the price is this low. $20 per tire including a tubeless valve - not bad!