Here it goes to theManufacturer info and product detailsto the NS NERD BIKE Jr. 24".
 
The bike can be converted to 26" with an additional wheel set.  The additional costs here are 569 CHF.
 
Main features:
-LIGHT ALLOY FRAME WITH YOKE DRIVEN SHOCK
- TOUGH DOUBLE PASS WELDS
- SOLD WITH 24” WHEELS BUT WILL ACCEPT 26”
- 120MM FRONT / 120MM REAR WHEEL TRAVEL
- AIR SHOCK AND FORK WORK PROPERLY UNDER KID'S WEIGHT
- LIGHT AND RELIABLE WHEELS BUILD ON SEALED BEARING HUBS
- SHIMANO 10SPD DERAILLEUR