Twin
Foundation: 37.5" x 74" x 7.5"
The One Mattress: 38" x 75" x 11"
Dream Mattress: 38"x 75" x 12"
Mattress Protector: 39" x 75"
Twin XL
Foundation: 37.5" x 79" x 7.5"
The One Mattress: 38" x 80" x 11"
Dream Mattress: 38" x 80" x 12"
Mattress Protector: 39" x 80"
Full
Foundation: 52.5" x 74" x 7.5"
The One Mattress: 53" x 75" x 11"
Dream Mattress: 53" x 75" x 12"
Mattress Protector: 54" x 75"
Queen
Foundation: 59.5" x 79" x 7.5"
The One Mattress: 60" x 80" x 11"
Dream Mattress: 60" x 80" x 12"
Mattress Protector: 60" x 80"
King
Foundation: 75.5" x 79" x 7.5"
The One Mattress: 76" x 80" x 11"
Dream Mattress: 76" x 80" x 12"
Mattress Protector: 76" x 80"
Cal. King
Foundation: 71.5" x 83" x 7.5"
The One Mattress: 72" x 84" x 11"
Dream Mattress: 72" x 84" x 12"
Mattress Protector: 72" x 84"