Protein Range

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!

Grid List

25 Item(s)

  •  Overnight Protein - 1kg (Cookies and Cream)

    Overnight Protein - 1kg (Cookies and Cream)

    100303
    1

    Regular Price: £48.00

    Special Price £23.99

  •  Overnight Protein - 1kg (Vanilla)

    Overnight Protein - 1kg (Vanilla)

    016716
    2

    Regular Price: £48.00

    Special Price £23.99

  • SiS Protein Bar 55g 20 Pack Chocolate & Peanut

    Protein Bar - 20 Pack (Chocolate & Peanut)

    009169
    3

    £40.00
  •  Whey Protein - 1kg (Pineapple & Coconut)

    Whey Protein - 1kg (Pineapple & Coconut)

    100304
    4

    £30.00
  •  Advanced Isolate+ - 1kg Mint (Chocolate)

    Advanced Isolate+ - 1kg Mint (Chocolate)

    100010
    5

    £45.00
  • SiS Protein Bar 55g 20 Pack Mint Chocolate

    Protein Bar - 20 Pack (Mint Chocolate)

    009497
    6

    £40.00
  •  WHEY20 - 12 Pack (Chocolate Orange)

    WHEY20 - 12 Pack (Chocolate Orange)

    200702
    7

    £27.50
  • SiS Whey Protein 1kg Chocolate

    Whey Protein Powder 1kg Tub - Chocolate

    015115
    8

    £30.00
  •  WHEY20 - 12 Pack (Caramel)

    WHEY20 - 12 Pack (Caramel)

    200701
    9

    £27.50
  • SiS WHEY20 78ml Mixed 4 Pack - Strawberry & Lemon

    WHEY20 Mixed - 4 Pack (Strawberry & Lemon)

    100070
    10

    £9.00
  • SiS Whey Protein 1kg Strawberry

    Whey Protein Powder 1kg Tub - Strawberry

    015016
    11

    £30.00
  • SiS WHEY20 78ml Mixed 4 Pack - Strawberry & Lemon

    WHEY20 Mixed - 4 Pack (Chocolate Orange & Caramel)

    200705
    12

    £9.00
  •  WHEY20 - 12 Pack (Lemon)

    WHEY20 - 12 Pack (Lemon)

    100068
    13

    £27.50
  • SiS Whey Protein 1kg Vanilla

    Whey Protein - 1kg (Vanilla)

    015719
    14

    £30.00
  •  WHEY20 - 12 Pack (Strawberry)

    WHEY20 - 12 Pack (Strawberry)

    100069
    15

    £27.50
  • WHEY20 78ml 8 Pack Bundle - (Choose your Flavours)

    WHEY20 78ml 8 Pack Bundle - (Choose your Flavours)

    sis-bundle-26t
    16

    Regular Price: £18.00

    Special Price £9.99

  • Protein Bar Bundle

    Protein Bar Bundle

    protein-bar-bundle
    17

    £12.00
  • Whey Protein Shake & Take - Chocolate

    Whey Protein Shake & Take - Chocolate

    103005
    18

    £1.75
  • SiS BCAA Perform - 250g (Pineapple)

    BCAA Perform - 250g (Pineapple)

    100305
    19

    £18.00
  • Whey Protein Shake & Take - Strawberry

    Whey Protein Shake & Take - Strawberry

    103006
    20

    £1.75
  • SiS BCAA Perform - 250g (Summer Fruits)

    BCAA Perform - 250g (Summer Fruits)

    100306
    21

    £18.00
  •  Creatine - 400g (Orange)

    Creatine - 400g (Orange)

    100307
    22

    £10.00
  • SiS Creatine Monohydrate - 400g (Unflavoured)

    Creatine - 400g (Unflavoured)

    100308
    23

    £10.00
  •  Beta Alanine - 150 Tablets (Unflavoured)

    Beta Alanine - 150 Tablets (Unflavoured)

    100600
    24

    £20.00
  • SiS Glutamine - 400g (Unflavoured)

    L-Glutamine - 400g (Unflavoured)

    100309
    25

    £18.00

Grid List

25 Item(s)