We define fitting full immersion as being able to submerge up to your neck with your arms and legs fully under water.
The interior dimensions of the standard tub is 45.5" (L) x 25.5" (W) x 24.125" (H) which is big enough to fit 6'3–6'4 full immersion.
The interior dimensions of the XL tub is 56.5" (L) x 30.5 (W)" x 25.8125" (H) which is big enough to fit a 7'0 person full immersion or two people comfortably.
The dimensions of The Edge Tub Legacy Chiller is: 24” (L) x 11” (W) x 17.75” (H), while The Edge Tub Elite Chiller is: 26” (L) x 13” (W) x 20.5” (H)