4 year old bike helmet boy Toddler 2-4 Years Kids Helmets 7 strategically placed vents help keep little heads cool Kids Helmet, SIFVO Kids Bike

Surface electrodes deliver stimulation pulses (typically biphasic rectangular pulses with 3050 Hz, 250500 s pulse widths and currents up to 130 mA) to motor points of key muscles (quadriceps, hamstrings, gluteals, tibialis anterior gastrocnemius/soleus), enabling paralysed or weakened individuals to perform volitional cycling against resistance

The exterior is a dark heather grey, while the interior is a vibrant red to help any small accessory stand out from within

Powering Up When you first power up the device, you are taken to the Device Setup menu, which gives you the option to either Activate or Skip

Hey Ben, I can't speak to the new models (2022+) but the older 20-21 models should be sized the same with just a colorway difference