Matrix Elite Complete All-in-One Protein Powder: 2.25kg (£26.99) or 4kg (£42.99) With Free Delivery (Up to 57% Off). And more Providing key nutrients to help complement workouts, these Matrix Elite protein powders include over 60g of multi-stage release proteins per 100g of powder, to help energise muscles pre- and post- workout. The chocolate or strawberry flavour powders are available in 2.25kg or a hefty 4kg tub.