Ringside cobra reflex bag ??

[StrictlySP]

Here you go:
http://www.ebay.com/itm/Ringside-Cob...-/182455759513

Here's the newer model:
https://www.amazon.com/Ringside-CRBU...b_title_sports

[StrictlySP]

Here's a video showing it being used:


Personally, I prefer a double-end bag...

[brocktonblockbust]

be good to tighten the torque on that spring to get faster action, otherwise looks like a bunch of bullshit to me, double-ended are way better

[greynotsoold]

[brocktonblockbust]

that seemed more tightly set it had faster action

[wanderingfighter]

Save your money... I dealt with these type of bags before and they are all junk. You're better off making the trip to the gym.