These are a perfect size 18.7cl, just over a 'medium' 17.5cl glass of wine and contain 2.3units of alcohol.
UK Government recommends adults
do not regularly exceed:
Men 3-4 units per day
Women 2-3 units per day.
ABV 12.5% by volume ~ 18.7cl : 1/4 bottles
PER BOTTLE £1.95 (inc VAT)