This pattern has been worked in cotton DK yarn with a 4mm hook, but can be made with any yarn, and works well with textile yarns for a mat or seat pad for a chair.

I’ve used the following yarns:

Rico Design Essentials Cotton DK (all brights: pink, yellow, royal blue, emerald green

Wendy Supreme Luxury Cotton DK (lighter shades)

Patons 100% Cotton DK (jade)

King Cole Cotton Soft (violet)