What are pace weights?

[FourAM]

I know what plate mates are and have prices them but I have not heard of the pace weights.
Also I have read some of you all referring to using your wrist weights...are you using them on your wrist or attaching them to the weights? I wasn't sure if it would effect the weight lifting attached to your wrist or burden you in some way.

 

[fitover40]

You can find more info on the pace weights on their website at http://paceweights.com/