Skip to content
CUSTOMER NOTICE: Closed Saturday 15th to Sunday 23rd June 2024 - Back to business Monday 24th June 2024.
CUSTOMER NOTICE: Closed Saturday 15th to Sunday 23rd June 2024 - Back to business Monday 24th June 2024.

Optimum Nutrition Serious Mass 5.4kg

Sold out
Original price £59.99
Original price £59.99 - Original price £59.99
Original price £59.99
Current price £54.99
£54.99 - £54.99
Current price £54.99
Availability:
Out of stock
Availability:
Out of stock
Availability:
Out of stock
Availability:
Out of stock
Availability:
Out of stock
Flavour: Banana

ON's Serious Mass is the ultimate weight gain formula. If you find it difficult to gain weight, Serious Mass can help you develop the physique you've always wanted! Without adequate calories and quality protein, you simply can't get any bigger, without enough fuel and muscle-building nutrients like protein, you simply won't grow! Enter Serious Mass... What Does It Do? Each delicious shake delivers an incredible 1,250 calories, but no added sugar. This includes 50g of blended protein to support building muscle and 250g of carbs to fuel your workouts. That's serious calories, serious protein and serious carbs...that's Serious Mass!

All items are sent either via Royal Mail, DHL Parcel UK & Parcel Force. In most cases - Royal Mail, Parcel Force & DHL Parcel UK - a signature will be required, so please ensure someone is in to sign at the time of delivery (or a 'leave safe' instruction left).

Royal Mail deliver on Saturdays*. DHL Parcel UK deliver Monday-Friday.

We dispatch Monday-Friday unless otherwise stated.

We currently deliver to UK Mainland & Parts of Europe. Allow extra time for deliveries to Northern Ireland & Europe.

UK Mainland, Northern Ireland*, Isle of Man* Only

Standard Delivery - Deliver within 2-10 Working Days

Parcel weigh between 0.2-10kg

Order before 1pm
£3.99

Standard Delivery* - Deliver within 2-6 Working Days

Parcel weigh between 0.5-4kg

Order before 1pm
£4.49

UK Mainland Only

Express Delivery - Deliver within 1-3 Working Days

Parcel weigh between 0-10kg

Order before 1pm
£5.99

Parcel weigh between 10-20kg

Order before 1pm
£6.49

France - Mainland

Standard Delivery - Deliver within 2-7 Working Days

Parcel weigh between 0-5kg

Order before 1pm
£12.99

Worldwide Delivery, Email Us

Standard Delivery - Deliver within 3-10 Working Days 
Parcel weigh between 0-5kg
Order before 1pm
£14.99 >

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare