Ultra-lightweight Japanese brand glasses case, approximately 14g with a warranty of up to 90 days. - Brand: Japanese Brand - Weight: Approximately 14g - Warranty Period: Up to 90 days - Standards: JIS Japanese Standards Blue light cut specification. How about it for those who frequently use computers, tablets, and mobile phones? I think it's perfect as part of a fashion coordination! The case has been opened from the bag once for photography. Thank you for viewing.