NEW BIGGER, STRONGER CRYSTALS & LOWER PRICE.

BACK IN STOCK! VERY LIMITED QUANTITY.

Our Prices - The Difference Between ROCKJAW and Competitors:

We spend hours hand-picking and hand-packing EACH & EVERY individual mastic gum crystal selecting only the toughest crystals for your jawline - these are the ones that end up in your pack of Stackables to ensure the highest quality product. We are the ONLY BRAND that handpicks each and every crystal, and this effort & labour is reflected in our prices, including the high price of mastic gum itself.

Our competitors do not go through this process, and mass pack crystals - meaning a lot of the crystals are likely to be soft. We keep our stock refrigerated to maintain product integrity.

Due to the rarity of hard mastic gum, we produce a very limited number of units per month of Stackables.

Despite our vigorous quality check, we still aim to price our products fairly, and also donate a portion of our sales to charity every month to help support global disasters.

Top Competitor: £34.98

ROCKJAW: WAS £̶32.98 NOW £23.98

What Is Stackables?

A REFINED Chewing Experience

Unlock your true potential with ROCKJAW® Stackables Mastic Gum – your sharpest jawline awaits!

Get a more refined chewing experience with stackable solid crystals, giving you more control over your chewing experience. Each pack contains 20 grams of fresh mastic for refined chewing.

⭐️ Increase your bite force

⭐️ Enhance your facial aesthetics

⭐️ Reap the rewards of the numerous health benefits of nature's gift to us, mastic gum, which can also be re-used!

Best paired with Tuff Gum.

WHAT YOU GET

💪 10X HARDER GUM (Than Regular Gum)

♾️  Re-Chewable TWICE!

✅ FREE Pro Training Program - Get Faster and Better Results!

✅ The FRESHEST, HAND-SELECTED Mastic Drops

✅ FREE 1-1 Support Via Instagram (@rockjawuk)

✅ Enables Progressive Overloading

✅ Enhanced Chewing Control

+ Additional Benefits:

✅ 5 Star Customer Support

👄  Improves Breathing

🌱 100% Natural

🦷 Improves Dental Hygiene

✅ Sugar-Free

✅ Aspartame-Free

✅ Soy-Free

✅ Antimicrobial properties

✅ Bulk Purchase Discounts

GET RESULTS:

Time waits for no one.

Mastic was chewed by cavemen back in the day - now picture a caveman...did you visualise a person with a razor-sharp jawline? Foods have become softer over the years, meaning our jaws are not utilised to their max potential. 

What Does This Mean?

Similar to going to the gym and then stopping, this has caused our jaws to adapt to softer foods, meaning our jaws no longer require to be big and strong, and have become smaller, and our biting force has been dramatically reduced over time. 

The Fix - Let's Time Travel Back In Time

The fix? Mastic gum. To restore jaw strength and structure, mastic gum is ideal for masseter muscle (jaw muscles) resistance training, since it is 10 to 14x tougher than regular chewing gum. 

This is ample force for jawline development, improving bite force, and maintaining good tongue posture, which also promotes nasal breathing. 

Mastic gum was their secret, and now it is yours too!

Mastic is also recommended by Dr. Mike Mew (a British orthodontist who incorporated mewing into the world of dentistry) as one of the best ways to exercise the jawline.

For optimal results, try ROCKJAW with mewing exercises.

How To Use:

Stack as many crystals of ROCKJAW as you suit and chew for 30 mins - 2 hours a day. 

Be sure to chew evenly on both sides, taking breaks.

Stack as many ROCKJAW crystals as you desire and chew for 30 mins to 2 hours daily. Ensure even chewing on both sides, taking short breaks.

Just like any muscle, consistency is key to maintaining and developing your masseter muscles for that striking jawline. It is important to continue working your jawline muscles for long-term results.

🌡️ FOR BEST RESULTS, KEEP REFRIGERATED & STORE IN A COOL, DRY PLACE.

Choking hazard, keep away from children under the age of 10.

As much as we try to ensure each crystal is tough, sometimes we make mistakes & some softer crystals may slip through our hands - we're not robots! Mastic gum is also softer during the summer months and may impact the hardness of crystals.