Made in Italy; Large straight mode wheels to substitute the swivel front wheels on the Book Pop Up and Booklet strollers; Allow for greater mobility on any type of terrain and in inclement weather condition like snow or ice; Click on and off easily; Large straight mode wheels to substitute the swivel front wheels on the Book Pop Up and Bookstrollers.; Allow for greater mobility on any type of terrain and incleers. ment weather condition like snow or ice.