Clear Answers Before You Ride
Frequently Asked Questions
Practical information about Melvenna™ helmets, sizing, safety standards, ordering, shipping, care, returns and customer support.
Last updated: September 22, 2026
Products, Fit & Safety
Our catalog may include helmets intended for riding, commuting, motorsport, cycling or recreational activities. Review the individual product page for intended use, construction, sizing, included accessories and stated certification information.
Measure the widest circumference of your head according to the product size guide. Compare the result with the chart for the exact model. A helmet should sit level and securely without painful pressure points or excessive movement.
No. Standards vary by helmet type, activity and market. Only rely on certifications expressly listed for the exact product. Never assume a helmet designed for one activity is suitable for another.
No helmet can prevent every injury or eliminate risk. Correct selection, fit, fastening, inspection, maintenance and responsible use remain essential.
Do not continue using a helmet after a significant impact, even if damage is not visible. Energy-absorbing materials may have been compromised.
Orders, Care & Returns
Most in-stock orders are prepared within 1–3 business days after payment verification. Holidays, high-volume periods, presale products and verification reviews may require additional time.
Contact us immediately. We will try to assist before fulfillment begins, but changes and cancellations cannot be guaranteed once processing or shipment has started.
Do not use it. Contact us within 7 days of delivery with your order number and clear photographs of the shipping box, label, packaging and helmet.
Eligible unused and unworn helmets may be returned according to our Return & Refund Policy. Helmets involved in an impact, modified products or products showing use, odor, damage or missing safety components may not qualify.
Follow the supplied instructions. Generally, use mild soap and water, avoid solvents and excessive heat, dry naturally, and store away from chemicals, direct sunlight, sharp objects and crushing loads.
Company & Support Information
Brand: Melvenna™
Website: melvenna.com
Company: Shenzhen Zhongwang Yilian Technology Co., Ltd.
Owner: Yang Zao
Email: service@melvenna.com
Phone: +86 134 2886 9995
Service Hours: Monday–Friday: 9:00 AM–6:00 PM; Saturday: 10:00 AM–4:00 PM; Sunday: Closed
Address: Unit 2202, Building 1, Hejian Yungu, No. 8 Xinwang Road, Xinsheng Community, Longgang Subdistrict, Longgang District, Shenzhen, China