2:0” or “2.0” means 2.0 litres (2000 mL) of capacity — i.e., the flask holds about 2‐litres of liquid (2000 mL). In product listings you’ll see this written as 2.0 L, which is the same as 2000 mL.
“JP” is usually the brand name or model series (for example JP vacuum flasks sold locally in Kenya).
“mL” stands for millilitres, the unit of volume measurement — here indicating the flask’s capacity in metric units (2.0 L = 2000 mL).
So “Flask 2.0 JP mL” essentially means a JP‐brand vacuum flask with approximately 2.0 litre (2000 mL) capacity — the kind used to keep drinks hot or cold for long periods.
If you want, I can help you find specific JP 2.0 L flasks with prices and links available in Kenya (e.g., from Jumia or Kilimall).