Abstract: Embodiments of golf club heads, golf clubs, and methods to manufacture golf club heads and golf clubs are described herein. In one example, a golf club head includes a body portion with a front opening and a back opening, a face portion closing the front opening, and a back cover portion that closes the back opening and includes at least 50% of the total area of the back portion, a first port, and a second port. A first mass portion and a second mass portion engage the first port and the second port to close the first port and a second port, respectively. The first mass portion and the second mass portion each includes a material with a greater density than the material of the body portion and the material of the back cover portion. Other examples and embodiments may be described and claimed.

Abstract: The present swimmer's aid has a centrally positioned hand grip arrangement for receiving the swimmer's hands close together and flotation elements extending laterally outward on both sides beyond the hand grip arrangement for flotation stability.