Amazon is selling the Sennheiser Adidas PMX-680 for only $37.99 shipped, originally priced at $79.95. Its “neckband vertical transducer system provides a comfortable, secure fit that won’t fall out during your workout.” Product page.

The DuPont Kevlar reinforced cabling guarantees durability and flexibility where other sport headphones can’t–even in cold temperatures. A sweat-proof, water-resistant construction lets you go your hardest during any off-season.

[via Amazon]