Adidas bought 5-10 and dropped the Canyoneer 3 along with shutting off the supply of Stealth Sticky Rubber Soles to other wader and water shoe makers. Astral has come up with a replacement that is claimed to be at least as good as Stealth's S-1 sticky rubber. My Canyoneer SRs have had the front sections of the Stealth out-sole re-glued last year (with E 600 Glue - 6000 PSI/Sq/In holding power, flexible and H2o proof glue) and the arch and heal sections re-glued this season, so I am presently looking for a replacement wet wading/fishing boot.
Two replacement candidates have been identified: Astril's Hiyak Boot and the SoftScience Terrafin Fly Fishing wading boot. Here is some information on both: https://www.exploringelements.com/review-astral-hiyak/ and https://www.softscience.com/terrafin.html