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Interpro Fitness
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Protein Shaker - Grey
£7.99
£14.99
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— this colour is selling fast.
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Free UK delivery over £60
Free 28-day returns
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Mix up the perfect protein shake with our grey gym protein shaker! The metal mixer ball ensures a smooth blend, breaking down even the toughest protein clumps for a consistently silky shake every time.
The sleek grey design paired with the signature Interpro logo makes this protein shaker bottle a stylish addition to your gym bag, while the durable, leak-proof build keeps it ready for daily use. Whether you're heading to the gym, the office, or on the go, this shaker is built to keep up.
Take your workouts to the next level with this must-have gym shaker bottle in grey — a simple, reliable essential for every training day.
United Kingdom
Standard Delivery — £3.99
Estimated delivery: 2–3 working days
Free delivery on orders over £60.00
Next Day Delivery — £4.99
Order before 5pm for next working day delivery
Free next-day delivery on orders over £100.00
Exchange and returns accepted within 28 days. Items must be unworn and in original packaging. View full returns policy
Protein Shaker - Grey
£7.99
£14.99
Why Interpro
How our gym wear compares to the typical high street alternative.
| Feature | Interpro Fitness | Typical alternative |
|---|---|---|
| Heavyweight fabric | ||
| Free UK delivery over £60 | ||
| Returns window | 28 days | 14 days |
| Student discount | 15% off | |
| Buy more, save more | Up to 20% off |
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Frequently Asked Questions
Regular fit and true to size. If you prefer a relaxed, oversized look, order one size up.
Machine wash cold with like colours, do not tumble dry, and iron on low if needed. Avoid bleach so the colour and logo last.
UK standard delivery is 2 to 3 working days. Order before 5pm for next day delivery.
Yes, within 28 days, unworn and in the original packaging.
Still have a question about sizing or delivery? Contact our team
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Size Guide
Body measurements, not garment measurements. If you fall between two sizes we recommend sizing up. If your waist is one size smaller than your hips, go with the larger size.
| Size | Bust (cm) | Waist (cm) | Hip (cm) |
|---|---|---|---|
| XXS | 76.5-79.5 | 58.5-61.5 | 85.5-88.5 |
| XS | 79.5-85.5 | 61.5-67.5 | 88.5-94.5 |
| S | 85.5-91.5 | 67.5-73.5 | 94.5-100.5 |
| M | 91.5-97.5 | 73.5-79.5 | 100.5-106.5 |
| L | 97.5-103.5 | 79.5-85.5 | 106.5-112.5 |
| XL | 103.5-109.5 | 85.5-91.5 | 112.5-118.5 |
| XXL | 109.5-115.5 | 91.5-97.5 | 118.5-124.5 |
Prefer a tighter, second skin fit? Take the smaller size. Prefer room to move? Take the next size up.
1
Bust
Place the tape under your arms at the fullest part of your chest.
2
Waist
Measure the full circumference of your natural waistline, just above your hips. Do not pull the tape tight, leave a little give.
3
Hip
Measure the full circumference at the fullest point of your hips, including your seat.
4
UK size
XXS 2-4 • XS 6-8 • S 8-10 • M 10-12 • L 12-14 • XL 14-16 • XXL 18-20