For a low-fat gym-bag drink, start with the exact bottle’s fat figure: UK government guidance sets the limit for a low-fat liquid claim at 1.5g per 100ml. Sainsbury's lists Yazoo Strawberry 400ml at 1.1g per 100ml, while Tesco Groceries lists Müller Frijj Chocolate 330ml at 1.3g; compare their sugars, protein and bottle sizes before choosing. A no-added-sugar label answers a different question: Tesco lists the checked Mars drink at 2.2g fat per 100ml.
If low fat is the deciding requirement, compare fat per 100ml on the exact flavour and pack. UK government guidance sets 1.5g per 100ml as the maximum for a low-fat liquid claim; flavour, protein and no-added-sugar wording do not replace that check.
A sealed bottle may be convenient to carry, but its storage label still matters. Follow the bottle’s instructions before opening and keep it cold when it is sold chilled or needs refrigeration after opening.
Compare both figures per 100ml, then consider how much of the bottle you will drink. Tesco Groceries lists more protein and more sugars per 100ml for Müller Frijj Chocolate 330ml than Sainsbury's lists for Yazoo Strawberry 400ml.
Check the low-fat criterion on the exact bottle first, then compare the nutrition figures on the same per-100ml basis and plan how you will carry the drink.
| Priority | What to check | Your needs |
|---|---|---|
| Low-fat claim | Read fat per 100ml on the exact flavour. UK government guidance sets a maximum of 1.5g per 100ml for a low-fat liquid claim; check it separately from any no-added-sugar wording. | I want a drink that meets the low-fat criterion, rather than relying on how its name or packaging sounds. |
| Protein and sugars | Compare both per 100ml. Sainsbury's lists Yazoo Strawberry 400ml at 3.0g protein and 8.7g sugars per 100ml; Tesco Groceries lists Müller Frijj Chocolate 330ml at 3.7g protein and 11.4g sugars per 100ml. | If I am choosing between these two drinks for their protein figures, I also want to account for their different sugars figures. |
| Bottle size | Check the bottle volume and whether the nutrition panel gives figures per 100ml, per serving or per bottle. The checked Yazoo bottle is 400ml and the Frijj bottle is 330ml. | A smaller bottle may suit the amount I plan to drink; per-100ml figures alone do not describe my whole portion. |
| Storage | Follow the exact bottle’s storage instructions, particularly after opening. GOV.UK guidance says chilled food must be kept at the right temperature during storage and transport. | If the drink is chilled or I plan to drink only part of it, I need a way to keep it cold rather than leaving it in a warm gym bag. |
| Ingredients | Read the current ingredients and allergen statement for the exact variant. The checked drinks contain milk; the checked Mars drink also contains barley and sweeteners. | I need to know whether the ingredients suit me before putting a bottle in my bag. |
They are separate label claims. Tesco Groceries lists the checked Mars No Added Sugar drink at 2.2g fat per 100ml, above the 1.5g-per-100ml limit in UK government guidance for a low-fat liquid claim.
If low fat is your requirement, check the fat figure on the bottle even when another claim catches your eye.
Tesco Groceries lists 3.7g protein and 11.4g sugars per 100ml for Müller Frijj Chocolate 330ml. Sainsbury's lists 3.0g protein and 8.7g sugars per 100ml for Yazoo Strawberry 400ml.
Compare both figures per 100ml, then consider the volume you expect to drink.
The checked Yazoo, Frijj and Mars product information calls for refrigeration after opening. An opened bottle left in a warm gym bag does not follow those instructions.
Follow the pack’s storage directions; if you need to carry a drink that requires chilling, plan how to keep it cold.
Nutrition and ingredients need to be checked for the particular flavour and pack you are buying, rather than inferred from another bottle under the same brand.
Read that bottle’s nutrition panel, ingredients, allergens and storage statement before choosing it.
These references concern specific drinks and retailer listings, not every product made or sold under each name.
The Strawberry Milk Drink 400ml listed by Sainsbury's is a ready-to-drink option with 1.1g fat per 100ml.
Tesco Groceries lists the Chocolate Milkshake 330ml at 1.3g fat per 100ml, within the UK low-fat liquid claim limit.
Tesco Groceries lists a No Added Sugar Chocolate Flavoured Milk Drink 400ml, but no added sugar is not a low-fat claim.
Tesco Groceries provides listings for the checked Müller Frijj Chocolate and Mars No Added Sugar drinks.
Sainsbury's lists Yazoo Strawberry Milk Drink 400ml with per-100ml nutrition figures.
These Joybuy options include protein shakes and a yoghurt drink in pack sizes that may suit a gym-bag snack. For each one, check the exact pack’s fat per 100ml against the UK low-fat liquid claim limit, along with its ingredients and storage directions; do not assume it has the same nutrition as the Yazoo or Frijj bottles discussed above.
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The 250ml can size may suit a single gym-bag drink. Check the can’s nutrition panel and its instructions for carrying and storing it, particularly after opening.
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This 330ml bottle format is worth considering if that volume suits your snack. Compare the exact bottle’s fat, protein and sugars per 100ml, and follow its storage instructions.
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The 330ml bottles offer a strawberry-and-cream flavour for a gym-bag snack. Read the exact pack’s per-100ml nutrition and after-opening storage directions before choosing it.
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Consider whether a 500ml bottle matches the amount you intend to carry and drink. Compare its per-100ml figures as well as the full portion, and check the pack’s storage instructions.
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The 220ml yoghurt-drink format may appeal if you want a smaller bottle rather than a conventional milkshake. Check its ingredients, per-100ml nutrition and storage directions for the exact drink.
UK government guidance says a liquid product making a low-fat claim must contain no more than 1.5g fat per 100ml. Check the exact flavour’s nutrition panel: Sainsbury's lists Yazoo Strawberry 400ml at 1.1g per 100ml, and Tesco Groceries lists Müller Frijj Chocolate 330ml at 1.3g.
Yes, if you follow that bottle’s storage instructions and can maintain any required chilling. The checked Yazoo, Frijj and Mars drink information calls for refrigeration after opening; do not leave an opened bottle in a warm bag. GOV.UK guidance says chilled food must be kept at the right temperature during storage and transport.
No. Tesco Groceries lists the checked Mars No Added Sugar drink at 2.2g fat per 100ml, above the 1.5g-per-100ml limit in UK government guidance for a low-fat liquid claim. Check the two claims separately.
Read the allergen statement on the exact bottle before buying. The checked Yazoo and Frijj drinks contain milk, while the checked Mars drink contains milk and barley; choose a product whose current ingredient and allergen information meets your requirements.