Amazon has Anker's popular SoundBuds Slim Bluetooth Headphones on sale for just $19 when you use the promo code SDBUDS35 at checkout. This is a great price on the Anker SoundBuds Slim, since these are typically priced at $25., and will normally drop to around $20 or $21, so seeing it even lower is definitely nice to see here, and not something you see too often.
These headphones are perfect for taking to the gym, since they are rated at IPX5, for waterproof and sweat proof. And because of that, it's great for taking on runs, not to mention the fact that these are also very lightweight, so they are less likely to fall out of your ears. Now because these are lightweight headphones, they aren't as great on battery life, compared to other earbuds out there. Anker says you'll get around seven hours of battery life on a single charge. That's actually only about an hour off of the industry average for this type of headphone. So it's not that bad, to be honest. Anker does include Bluetooth 4.1 here, so that you can connect to your smartphone easily without worrying about using up your battery life. Finally, Anker also includes a 18-month warranty on the SoundBuds Slim. That way, if anything were to go wrong, you can get them fixed or replaced without any hassles.
This item is also eligible for Amazon Prime's free shipping. Which includes free two-day shipping, and pretty cheap (usually $3.99) next-day shipping if you need it extra fast. If you are not an Amazon Prime member yet, you can sign up for a free trial of Amazon Prime. You'll get 30 days free (if you're a student, you get 6 months), and then it's $119/year (or $59/year for students). Prime members do get a whole lot more than just free shipping though, so be sure to check out the full benefits.