durable and long service life

Size: 26*22cm

chin strap and quick-release buckle

IPX4 waterproof and dustproof: The electronic doorbell is waterproof

The internal mesh fabric allows you to breathe more comfortably

ROCKBROS Photochrome Sonnenbrille für Outdoor-Aktivitäten Unisex Color:Blue durable and long service lifePhotochromic technology: Photochromic lenses are based on the intensity of sunlight. The lenses darken in sunlight and briefly brighten indoors. You don't need to change lenses when the light level changes. Lightweight and comfortable: These photochromic sunglasses weigh only 30 grams, so you won't feel anything on your nose. Ultralight cycling sunglasses reduce pressure on your nose and temples. SAFETY: The thickened PC lenses with UV400 protection