skye helmet

Many helmets list hands-free communication and automated safety alerts, including one-click call answering, PTT walkie‑talkie functionality, voice commands, fall-detection SOS alerts, anti‑loss alarms, and weather‑resistant designs.

Available sizes cover kids through adults: kid small/medium ranges are shown around 20.1"–22.8" (51–58 cm); adult listings cover roughly 21.26"–24.02" (54–61 cm); some teen/adult listings note 55–58 cm (≈21.6"–22.8").

Listings show a range of certifications, including U.S. CPSC standards, ASTM F1447 and ASTM F1492, EN 1078, and NTA 8776 e‑bike certification on some multi‑sport helmets.

Common fit features include adjustable head‑circumference settings, chin straps with side‑release buckles, sizing dials or dial adjusters, and removable foam liners or padding to fine‑tune comfort.

Some helmets include built‑in visibility aids and alerts such as integrated waterproof LED backlights with flashing and solid modes, replaceable batteries, anti‑loss alarms, and SOS/fall‑detection alerts.

Power details vary by model: some helmets note a replaceable battery with up to about 30 hours of use, while several kids' helmets are listed as having no battery.

Listings show a range of overall dimensions (examples include 7.7"×20.1"×22.8" or 9.1"×9.1"×11.1") and occasional weight entries—one listing shows 345.5 g (0.76 lb).