Hi, Nate Taylor here. Please reach out to me at nate@sscycleworks.com for inquiries on parts availabilities and shipping estimates.
IRC Clincher (wired-on)Tires
IRC clincher tires on this page: Jetty Plus 700 x 28 folding clincher
IRC posted this short company bio: Founded in 1926 in Japan, IRC (Inoue Rubber Company), the global two-wheel tire specialist, has more than 90 years of experience developing and manufacturing tires for all types of cycling including BMX, gravel, road and mountain biking. IRC owns seven manufacturing plants worldwide and produces tires for bicycles, motorcycles and wheelchairs.
The right tire pressure is important, for both safety and ride quality. Here's Michelin's tire pressure guide, which is applicable to the IRC tires on this page:

IRC Jetty Plus 700 x 28 folding clincher tire. New, $30.00/each
Part# 46804
- Folding Aramid (generic term for Kevlar) bead
- IRC says its tread compound and pattern give the tire a terrific road grip in all conditions, including rain.

A tire designed to get you down the road in all conditions

Here's the tire from a different angle

Here's an early Donlup tires poster.
