Note: The swivel function of the Hercules Prime is only available when positioned on the right side of the vehicle. It does not operate when installed in the left rear seat.

Thomashilfen Hercules Prime Booster Car Seat is a medically adaptive, modular positioning seat designed for in-vehicle use. Engineered for children, teens, and smaller adults with physical or neurological disabilities, this rehab car seat offers therapeutic seating and safety for individuals weighing between 40 and 176.4 lbs. and measuring 51.1 to 70.9 inches in height. It ensures safe, stable transport during everyday travel or medical appointments.

Hercules Prime Adaptive Booster Seat evolves with the user’s needs, offering long-term comfort, support, and safety. Ideal for individuals with conditions like cerebral palsy, muscular dystrophy, or low trunk control, this special needs car seat secures the user using the vehicle’s standard 3-point safety belt while promoting upright posture and functional alignment.

Reasons to choose Hercules Prime Booster Car Seat

10° tilt-in-space function increases comfort for individuals with poor upper body strength or tone. The right-side-only swivel base simplifies car transfers for caregivers and passengers.

The backrest height is continuously adjustable by up to 5.1", supporting proper head and neck positioning as the user grows. Perfect for growing children and petite adults needing secure car seating.

Supports shoulder widths from 16.5" to 20.1", accommodating a broad range of body types. Individually adjustable shoulder guides ensure precise lateral support, even asymmetrically.

Thomashilfen Hercules Prime - Standard Features

Secure 5-point safety harness with cushioned shoulder pads provides reliable pelvic and trunk positioning. The harness adjusts easily via dual buckles, ensuring a safe and supportive seating posture during every ride.

Quick-release shoulder strap system allows each side to be buckled independently, streamlining the process for caregivers and reducing physical strain during transfers.

Folds compactly in seconds for travel or storage. This transport-friendly adaptive car seat fits in most vehicle trunks, making it ideal for families on the go or shared-use situations.

Tool-free back angle adjustment with a red quick-release lever lets caregivers easily find the most comfortable and medically beneficial recline position for the passenger.

Can my car accommodate the Hercules Car Seat?

• Positioning seat should be tested in your vehicle before use for proper fit and angle alignment.
• Ensure at least 2" (5 cm) clearance between the top of the user's head and the roof when seat is at full backrest height to allow safe and comfortable seating for tall users.

• No warranties carried through Thomashilfen extend to products subjected to misuse, accident, tampering, or modification not specifically described in the product's instructions.
• Stroller products manufactured by Thomashilfen carry a warranty of two years for all frame parts, commencing on the date of purchase.
• This guarantee includes all claims which influence functionality.
• Damage due to improper use (e.g. overloading) and normal wear and tear are excluded.

The warranty timeframe for each product is noted below:

• EASyS and ThevoTwist Size 1 and Size 2 Strollers: 2 year warranty
• Swifty Stroller: 2 year warranty
• tRide Stroller: 2 Year Warranty
• ThevoTherapy: 2 year warranty
• Car Seats: 2 year warranty

If you find a discrepancy please report within 10 days, so that we may take necessary corrective action.
Parts under warranty will be covered at no cost.
Any labor cost for service under warranty is not covered as per our terms of sale.
Standard manufacturer terms & conditions apply for the warranty of this product.

Please call us for specific details

• All returns are subject to inspection upon arrival.
• Any item returned for reasons other than warranty, may be charged a 30% restocking and/or reworking fee.
• Manufacturer is not responsible for damage that occurs during return shipping.
• We highly recommend insuring all returned items and using appropriate packaging to reduce any chance of damage during shipping.
• All returns must have an RA# number (Returned Authorization Number), unauthorized returns will not be accepted.
• The products must be new, unused condition, not tampered with, in original packaging and returned at the customer's expense.
• We are unable to accept returns or exchange of car seat products due to safety regulations and restrictions
• If your return is not due to any manufacturing defect then the original shipping cost and credit card/paypal processing fee will be deducted from the total refund
• Custom items may not be returned, except when approved as a warranty claim.

All returned items must meet the following requirements:

• A Return Authorization Number (RA#) must be requested within 15 days from the date product shipment
• Product must be returned in the original shipping cartons.
• The RA# must appear on the outside of the box being returned.
• We must receive the shipment within 15 days of issuing the RA#.
• Freight charges must be prepaid.

Standard manufacturer terms & conditions apply for return policy of this product.

Please call us for specific details