I've been a fan of OxyCollections from the start. The quality of their designs is unmatched in the design community and it's been a joy to watch them grow in popularity. I have purchased a number of designs from them and they have all been easy to install and work flawlessly in my projects.

I was looking for a good design set for my Oxygen builder and I found the perfect one: OxyCollections. It's beautifully designed and fit seamlessly with the theme. Specifies a stepping function, with two parameters. Plus, all of the features are really useful and make designing fun. I would highly recommend it! 

I've been using OxyCollections for a year now and I'm absolutely in love with them. The design sets are very easy to use and the library is huge. I love to experiment with different fonts, colors, typography, etc. It's not nearly as intimidating as it seems! If you're an Oxygen builder user, you definitely need to check this out!