Pretty straight forward as this is the top of the line manufacturer. I ordered over the weekend, and the boys were here early afternoon by USPS. There's no need to buy the adaptor (sold separately), if you have an inflator kit for an air compressor; you can use the rubber cone attachment to inflate.

Filled with water and used as a punching bag. I don't think you need any larger size unless practicing kicks. Thanks for attention.

This is the first yellow buoy that I have purchased. All other have been orange, and have faded in short time. At the very least, it helps me identify my lakefront, in a long line of orange ones! It is a good size, and easy to inflate. I especially like the screw in plug, very secure.

Buoys purchased to mark drop off in our lake swim area on small no wake lake. They are easily seen and were easy to inflate and install.

Love this thing. Saved so much money not buying from boxing/mma companies. Holding up well, no water leaks and I've really been breaking it in.