i want to get these headphones

http://www.amazon.com/Panasonic-RP-HTX7PP-W-Retro-Monitor-Headphones/dp/B000IBRX4M/ref=pd_sim_dbs__1?ie=UTF8&m=A2YLYLTN75J8LR

and i want to know if they’ll fit into my ipod

40mm is the size of the small speakers inside the headphone. Yes they will fit your 3.5mm headphone jack.

The reviews online for those look good!