I Occasionally recommend a product I have used and liked with links to the Amazon page — which gives my readers a chance to support this micro-enterprise by buying through it, since Amazon returns a small fee when you do. That doesn’t affect the price you pay, and since I’m a cost-conscious shopper, I recommend mostly cost-effective items.
Kinivo BTH240 Bluetooth Stereo Headphone – Supports Wireless Music Streaming and Hands-Free calling (Black) [Update July 2016] The successor to the headphones I previously recommended for workouts. Great low-cost (c. $25) Bluetooth headphones for exercise, making it easy to use your phone for cordless music while exercising. Good sound, long life battery (I only have to charge mine once a month!), sturdy yet compact when folded, works for phone calls using iPhone or similar.
After my Bose headphones were stolen at the gym, I looked around for a more disposable pair and found the predecessor of this current offering. Good enough fidelity for exercising, and as it turns out they lasted for five years until recently when the left channel wire broke and the ear padding started to erode. The new models are improved but very similar in size and feel, so after a few days of evaluation, I can recommend them.