For the Beet Buster / Stag Buster costumes...

[Kamen Rider Kaixa]

So I like the costumes for Beet / Stag Buster.

I noticed that the zippers went along at odd angles.

How do they make their zippers go at right angles and other odd angles?

It looks seemless too, but there hasn't been any great closeups for me to tell.

Anybody have a clue as to how the costume department pulled it off?

Is it two seperate zippers made to look like one continuous zipper?

 

[Decade]

A few friend of mine discussed this and we think its the 2 separate zippers part.
Top one zips first then the bottom one zips over the tops zipper. I Hope we get a good photobook to confirm this

 

[Glamador]

Looking at some pics, another option occurs to me: They might just be entirely for show.

Unless at some point you see them partially unzipped. But I doubt that would happen in the show.