Level 1 BDT shirts:

https://www.amazon.com/BDT-Apparel-Level-One-T-Shirt/dp/B0CHN2JHF1/ref=sr_1_2?crid=MR350Z2I6X2I&keywords=BDT+Apparel&qid=1695047230&sprefix=bat+apparel%2Caps%2C134&sr=8-2

Level 2 plus:

https://www.amazon.com/Busy-Dad-Training-Apparel-T-Shirt/dp/B0CHZ3MGC2/ref=sr_1_2?crid=MR350Z2I6X2I&keywords=BDT%2BApparel&qid=1695047275&sprefix=bat%2Bapparel%2Caps%2C134&sr=8-2&customId=B0752XJYNL&customizationToken=MC_Assembly_1%23B0752XJYNL&th=1


Burpees for Beginners:

https://www.amazon.com/Burpees-Beginners-Your-Journey-Mastery-ebook/dp/B0C39H6WPC/ref=sr_1_2?crid=30HLQJH6W5ZZH&keywords=burpees+for+beginners&qid=1695047315&sprefix=Burpees+for+begi%2Caps%2C100&sr=8-2