Bigger picture please, it's very hard to tell with an image that size.
They *look* like PoweriZers/PowerStriders, BUT, looking at the one on the left, they look like they have yellow springs.
2 Brands have yellow springs - 7s, but they're all yellow; And SkyRunners, which are like that.
They've either had 7s springs put on, or are SkyRunners, can't tell from that image though, hence why a bigger one is needed.
ANY stilts will take ProJump parts (apart from PJ calf cuffs), they are all of the same basic design and use the same size parts.