Protein

Protein is essential for endurance athletes, to ensure your muscles are rebuilt after your activity. Protein products are designed to suit every goal and budget, including Whey Protein, our premium Whey Protein Advanced Isolate +, great tasting Overnight Protein, delicious Protein Bars and the biggest innovation in protein for years – WHEY20. All available in a wide range of sizes and flavours!

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  1. SiS Whey Protein Tub - 1kg
    +4Flavours
    SiS Whey Protein Tub - 1kg
    Save 30%
    Special Price £21.00 Was £30.00
    65 Reviews
  2. PROTEIN20 - 12 Pack
    +3Flavours
    PROTEIN20 - 12 Pack
    Save 30%
    Special Price £21.00 Was £30.00
    59 Reviews
  3. SiS Whey Protein Bundle
    SiS Whey Protein Bundle
    Save 40%
    Was £66.00 £39.60
    0 Reviews
  4. PROTEIN20 Bar Bundle
    PROTEIN20 Bar Bundle
    Save 40%
    Was £15.00 £9.00
    3 Reviews
  5. SiS Overnight Protein Powder - 1kg
    +3Flavours
    SiS Overnight Protein Powder - 1kg
    Save 40%
    Special Price £28.80 Was £48.00
    22 Reviews
    Out of stock
  6. PROTEIN20 - 55g
    +3Flavours
    PROTEIN20 - 55g
    Save 30%
    Special Price £1.75 Was £2.50
    34 Reviews
  7. SiS Recovery Bundle
    SiS Recovery Bundle
    Save 50%
    Was £122.00 £61.00
    3 Reviews
    Out of stock
  8. SiS Protein Bar - 55g
    +2Flavours
    SiS Protein Bar - 55g
    Save 30%
    Special Price £1.75 Was £2.50
    40 Reviews
    Out of stock
  9. PNG
    SiS Protein Bar Bundle
    Save 40%
    Was £12.00 £7.20
    5 Reviews
    Out of stock
  10. SiS REGO Rapid Recovery Powder - 500g
    +4Flavours
    SiS REGO Rapid Recovery Powder - 500g
    Save 30%
    Special Price £9.10 Was £13.00
    82 Reviews
  11. REGO Rapid Recovery Powder - 1kg
    +4Flavours
    REGO Rapid Recovery Powder - 1kg
    Save 30%
    Special Price £18.20 Was £26.00
    100 Reviews
  12. REGO Rapid Recovery - 1.6kg
    +4Flavours
    REGO Rapid Recovery - 1.6kg
    Save 30%
    Special Price £29.12 Was £41.60
    93 Reviews
  13. SiS REGO Rapid Recovery Sachets - 18 Pack
    +3Flavours
    SiS REGO Rapid Recovery Sachets - 18 Pack
    Save 30%
    Special Price £22.40 Was £32.00
    31 Reviews
  14. SiS REGO Rapid Recovery+ Powder - 1.54kg
    +2Flavours
    SiS REGO Rapid Recovery+ Powder - 1.54kg
    Save 30%
    Special Price £32.20 Was £46.00
    36 Reviews
    Out of stock
  15. REGO Bundle
    SiS REGO Recovery Bundle
    Save 40%
    Was £80.00 £48.00
    20 Reviews
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