PRIMERO JawGryp

PRIMERO Jawgryp — a powerful tool rooted in the time‑tested training methods of old‑school strongmen and elite fighters. Designed to target the jaw and neck, this device builds raw, functional strength that matters where it counts. Neck and Jaw Strength: Your Shield Against the Hit!

Jaw Strength

• Place Jawgryp gently between teeth.
• Slowly open and close your jaw in a controlled motion.

 Jaw + Neck Strength

• Securely bite down on the Jawgryp with firm, even pressure.
• While maintaining your bite, slowly lift and lower your head, keeping your spine aligned and movements controlled.

Progress gradually (light → medium → heavy)

Reps: 8–12 repetitions per exercise

Sets: 2–3 sets (non-consecutive days)

Rest between sets: 30–60 seconds.

Massage the jaw muscles after use.

JawGryp Safety Disclaimer:
Use at your own risk. Primero Boxing is not responsible for injuries or damages from use. Inspect regularly and stop use if the item is worn or damaged. Train over rubber mats and keep feet and others clear when using with weights. Do not use if you have TMJ, jaw pain, dental issues, braces, or recent facial/dental surgery without medical clearance. Consult a dentist, physician, or trainer before starting. JawGryp is a fitness accessory, not a medical device.

Although these products may provide a degree of protection, participation in these activities involves significant risks of physical injury and potentially death. There are no certainties that these products will protect users from such risks. Participating in these activities is strictly voluntary and solely at the user’s risk. Inspect all equipment carefully and thoroughly before each use for any defects, damages and/or wear and tear. Note: With time and use the materials in the equipment will lose their effectiveness and require replacement.

WARNING: California Proposition 65 Proposition 65 is a California law that applies to companies selling products in California. Proposition 65 requires warnings if a product can expose an individual to any Proposition 65 listed chemical above a certain “safe harbor” level. Proposition 65’s warning standards are among the most stringent in the world. Proposition 65 is not a chemical prohibition law, but rather a “right-to-know” law. Businesses are entitled to provide warnings to comply with Proposition 65.There are over 900 chemicals on the Proposition 65 list, which is administered by California's Office of Environmental Health Hazard Assessment (OEHHA), a part of the California Environmental Protection Agency. The list includes naturally occurring and man-made chemicals. Proposition 65 warnings can be seen for a wide variety of everyday consumer products, including sporting goods equipment, and warnings can be seen posted throughout the state of California in a variety of establishments such as buildings, hotels, restaurants, coffee shops, and retail stores.