they are relatively inexpensive

Grand Tourism

This helmet is Dual Certified for Bike and Skate and has a patented MIPS Technology low-friction layer to reduce rotational forces caused by angled impacts

a mix of natural and artificial rubber blends

Sonic Turbo Wash Bio for Bearings Pig they are relatively inexpensiveMAKES BEARINGS SHINE FOR A FASTER, SMOOTHER ROLL Similar to the original Turbo Wash but filled with Sonic Bio Cleaner 100% biodegradable, non toxic, low VOC, plant based formula COMPACT BUT MIGHTY Washes up to 16 bearings in one load No need to install bearings on a rack which holds only 8 bearings 2 loads needed Just like clothes in a laundry machine, the agitation of the loose bearings promotes cleaning Loose bearings wont get damagedtheyre made of