Here is a band setup that will work your jab & perhaps you can use it at the same time as the mass suit.
If you take a look at the mass suit in my previous post its an excellent piece of kit. It looks like the products are compatible – as some of the lifelineUSA gear may be also.
This other product attaches to the waist so is wrong for japping.
Now a cheaper alternative is simply to slip a resistance band around your shoulder – or loop it around a door handle or post behind your back. This will work your jab & if you want to work pecs its similar to cable flys.
The mass suit is better for upper cuts & hooks. For kicks its ideal as is.