A fatbike (also called fat bike, fat tire, fat-tire bike, or snow bike) is an off-road bicycle built to accommodate oversized tyres, typically 3.8 in (97 mm) or larger and rims 2.16 in (55 mm) or wider, designed for low ground pressure to allow riding on soft, unstable terrain, such as snow, sand, bogs and mud.
(refer to https://en.wikipedia.org/wiki/Fatbike)
The R5 PRO, RX80/RX50, and RX20 (excluding RX70) produced by BURCHDA are all fatbikes.
They look like the bike version of a monster truck, and the tires are designed to ride on surfaces you wouldn't even think of, like sand and snow.
Fat tires are usually not solid and require you to prepare a pump to inflate them, and BURHCDA carries a pump in the package, which is exactly what you need.
