You can get them from Amazon.

https://www.amazon.com/Leotruny-Womens-Winter-Thick-Warmers/dp/B083L4CF2M/

https://www.amazon.com/Novawo-Womens-Fingerless-Warmers-Gloves/dp/B00PERL3XM/

The polo neck leotard/bodysuit may also come in different materials and colours if you search.

https://www.amazon.com/Kepblom-Turtleneck-Leotard-Sleeveless-Dancewear/dp/B07LBN69G7/ref=sr_1_2?crid=1MBYKBJEYF0WP&keywords=polo+neck+leotard&qid=1688198124&sprefix=polo+neck+leotar%2Caps%2C149&sr=8-2