Model 10 fits some Sprint cars and slender drivers under 100 lbs.

Model 20 fits most drivers in most cars

Model 30 fits larger drivers in most cars or slender drivers in Formula cars

Model 40 for extremely reclined seating applications, call for assistance.Available tether options:

• LW2 light weight fixed length or sliding tether
• Post anchor fixed length or sliding tether
• Post anchor Quick Disconnect tether
• Quick Click fixed length or sliding tether

It's easy to find the right HANS Device for you. SEATBACK ANGLE For comfort the HANS should match the angle of your seatback. MODEL 10 - EXTREME UPRIGHT SEAT Fits many Sprint cars. Fits many people weighing under 75 lbs. in an upright seat. If you sit very upright and cannot get comfortable with a Model 20 try this Model. MODEL 20 - UPRIGHT SEAT Fits all sedans including NASCAR, Busch, Sprint, Midget, Quarter Midget, Drag, Modified, Bandalero and similar. All sportscars including Porsche, BMW, Corvette, Honda, Viper etc. All Panoz Racing Series cars. Marine applications including UIM and Drag Boats. NOTE: Drivers over 200 lbs. may find a Model 30 more comfortable in vehicles listed above. In all cases driver comfort is the deciding factor. MODEL 30 - SEMI RECLINED SEAT Fits Formula Mazda, Atlantic, Infiniti Pro, Barber Dodge, IRL, C/D Sports Racer, Formula 1 and similar. MODEL 40 - RECLINED SEAT The Model 40 is a rare application and fits extremely reclined seats such as Vintage Formula Ford. Many people who buy a Model 40 return it for a Model 30. Please measure your seat (use an angle meter available at DIY-type stores) before ordering. SIZING For sizing information click here HELMET ANCHOR INSTALLATION The HANS Device attaches to your helmet via two metal anchors. 90% of our customers install their own anchors - all you need is a 1/4 inch drill and measuring tape. Devices come with instructions plus a special installation tool. If you prefer we will install the anchors for you as an extra cost option. Please select this service in Parts and Accessories to let us know you prefer this. DIFFERENT SERIES Some models are available in different series. The only difference is weight - all HANS Devices offer the same class-leading protection. The Professional Series weighs about 1 pound and the Sport Series weighs about 2.25 pounds. Weights vary due to size and accesssories. Use this chart to determine which HANS Device best fits you Due to differences in torso and muscle shapes it is difficult to predict exact fitments for specific neck sizes You may find that several HANS Devices fit your body - choose the most comfortable one All HANS Devices work exactly the same no matter which size you choose