The water bottle holder is from Amazon.
https://www.amazon.com/ZXXSFM-Backpack-Tactical-Attaches-Car(Multi/dp/B09TZYV1XK/ref=mp_s_a_1_3?crid=3R7W11SKS5PZQ&keywords=belt+water+bottle+holder&qid=1680409076&sprefix=belt+water+bottle%2Caps%2C148&sr=8-3