Product name: Smart cycling helmet Packing size:23 × 16 × 29 cm (9.1" × 6.3" × 11.4") Product color: As shown in the figure Product material:PC casing + EPS cushioning layer product features: Programmable LED Display Equipped with a customizable LED screen, allowing riders to display text, symbols, or patterns for fun and visibility. Bluetooth Connectivity Easily connects to your phone via Bluetooth to edit messages, control display modes, or update patterns in real time. Enhanced Safety & Visibility Bright LED display increases visibility during night rides or low-light conditions, making it safer for urban or outdoor cycling. Comfortable & Adjustable Fit Designed for all-day wear, with adjustable straps and internal padding to ensure comfort and stability. Versatile Use Ideal for electric bikes, motorcycles, scooters, and regular cycling, offering a mix of entertainment and practical safety features. Precautions: 1.As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2.If you feel difficult to choose the size, you can feel free to contact mewe will give you some suggestion, but it is for you reference only. Shipment includes: 1*Smart cycling helmet