The item is for 6 Yonex Mavis 350 nylon yellow shuttlecocks. Made in Japan. 

The color of the cap is blue. Yonex has classified it as middle speed, this speed should be around 77.

We mail within one day, but we cannot guarantee shipping speed.

Made of Nylon and cork, very durable.

Consistent flight pattern.

If you have any concern after receiving the item, please contact us via ebay message. Please do not open an ebay case. We will address your concern.

Domestic shipping delivery confirmation: USPS's delivery confirmation may not have timely tracking for domestic shipping.
Often it updates all the tracking information after it is delivered. Sorry for the inconvenience.

( http://www.cybadminton.org ) or ( http://cysports.tripod.com ).