A robust solution is essential for children, young people, and adults with physical and neurological disabilities to ensure their safety in the car. Hercules Prime US excels when adapted car seats become too small or when additional support is needed while sitting in the car. This positioning booster seat grows with the user, offering the familiar features of an adapted car seat and can be highly customized with a wide range of accessories that adapt as the user grows. When extra head and upper body support is required, a basic seatbelt system in the car is insufficient. This seat ensures a proper, safe sitting position on every journey.
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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
britax husky booster seat Thomashilfen Hercules Prime BoosterA robust solution is essential for children, young people, and adults with physical and neurological disabilities to ensure their safety in the car. Hercules Prime US excels when adapted car seats become too small or when additional support is needed while sitting in the car. This positioning booster seat grows with the user, offering the familiar features of an adapted car seat and can be highly customized with a wide range of accessories that adapt
Features
Swivel and Tilting Function
The tilting function, adjustable up to 10°, enhances seating comfort for users with limited upper body control.
Shoulder Width
The seat accommodates both slim and broad users with shoulder widths ranging from 42 to 51 cm (16.5 to 20.1 inches).
Backrest Height
The backrest height can be adjusted by 13 cm (5.1 inches), allowing it to adapt to the user's growth. This ensures optimal head support.
Compact and Convenient
Exploring Hercules Small Booster
Hitting the roads today with tomorrow's safety in mind. This specially engineered rehabilitation car seat not only meets current safety standards but is also designed to comply with future regulations effective from September 2023. The Hercules Small, tested according to the latest R129 standard, which includes both frontal and side impact considerations, provides a high level of safety and effective protection for your child.
Benefits of the Hercules Prime by Thomashilfen
Enhanced Comfort and Safety
The Thomashilfen Hercules Prime special needs car seat is meticulously engineered in Germany to offer ultimate comfort and safety for larger riders.
Multiple Positioning Accessories
The seat comes with a variety of adjustable accessories, such as Swing-Away Upper and Mid-body Supports, which can be easily tailored to offer additional support and comfort.
Easy Transfers with Swivel Base
The innovative swivel base facilitates easy transfers, reducing back strain for caregivers. The seat can swivel left or right, making it significantly easier to get in and out of the car.
Compact and Convenient
The Hercules Prime can be folded into a compact size, making it easy to install in vehicles, transport in small car trunks, and store when not in use.
Robust Safety Features
Built with a sturdy and impact-resistant shell, reinforced side wings, a 5-point harness, and an adjustable headrest, the seat exceeds US FMVSS 213 safety standards.
Size Chart
| Dimensions and Weights | Hercules Prime US |
|---|---|
| User Weight | 40 - 176.4 lbs |
| Weight of Seat (Basic Model) | 29.5 lbs |
| Seat Depth | 15.7" - 18.1" |
| Depth Behind Crotch Strap | 9.5" - 15" |
| Seat Width | 15.7" |
| Seat to Head | 24.8" - 29.9" |
| Back Width (Seat) | 17.7" |
| Shoulder Height (Belt Guide) | 15" - 23.6" |
| Shoulder Width (With Shoulder Guide) | 16.5" - 20.1" |
| Back Angle (Max.) | 120° |
| Seat Tilt-in-Space (With Tilting Base 10°) | 0° / 2,5° / 5° / 7,5° / 10° |
| Lower Leg Length (With Foot Rest) | 6.7" - 16.9" |
| Height of Lateral Trunk Supports (Upper Edge) | 10.2" - 14.2" |
| Distance Lateral Trunk Supports Rigid | 7.5" - 13.8" |
| Distance Lateral Trunk Supports Swing Away | 9" - 15.7" |
| Max. Overall Dimensions (w x h x d) | 20.5" x 34.6" x 16.9" |
| Min. Folded Dimensions (w x h x d) | 20.5" x 8.3" x 28.7" |
| Body Height User | 51.1" - 70.9" |
Accessories & Options
Latch / Seatfix Connector
Holds the seat securely in place
Stabilizing Bow
ensures that the seat remains secure when no Latch or Seatfix system is available
Stand
Guarantees stable placement of the seat in the passenger footwell
Headrest
Ensures proper positioning of the head and provides additional lateral support if necessary
Second Belt Guide (Top)
Provides a convenient option for using the 3-point safety belt on either the right or left side
Footrest (Foldable)
Enhances posture and supports the ability to push through the feet
Lateral Trunk Supports (Firm)
Provides firm lateral support for the thorax
Lateral Trunk Supports (Swing-away)
Provides firm lateral support for the thorax and facilitates transfer
Upper Body Guide (Firm)
Provides firm lateral support over a large area and supports the upper body
Upper Body Guide (Swing-away)
Provides firm lateral support over a large area and supports the upper body
Shoulder Guide
For adjustable width support of the shoulder area
Abduction Block
Enhances leg guidance and prevents the legs from crossing over
Leg Guides (left and right)
Supports a stable sitting position and provides necessary support for the thighs
Chest Clip
Prevents twisting of the straps and ensures they stay in place
Cushion For Function Base
Ensures maximum contact surface between the vehicle seat and Hercules Prime, providing greater stability
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Ideal for Summer Learning
Format: Paperback, Format: Paperback
The books are made of good quality and are durable for daily use. The pages are colorful, and the text is a good size for children to read. The instructions are clear and cover a wide variety of topics to reinforce children during the summer.
I would like for it to explain some concepts and not just be exercises. It includes answer sheets for all exercises, stickers to reward each day of exercise, and a diploma upon finishing the book. The exercises are designed for 15-20 minutes daily and are meant for children to review every day.
The pages are thick, so even if they use markers, it won't bleed through to the other side. I highly recommend them to avoid the summer gap when returning to classes.
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Reviewed in the United States on June 24, 2024
★★★★★ 5
Good book for summer!
Format: Paperback
I always get my son a workbook for that summer gap between grades, just so he doesn’t forget what he has learned and to get a little head start for the next grade. I usually get another brand but decided on this one and it is so great! Had the same exact material my son learned in second grade so it was easy for him to get in the groove of things and eases him into the next grade
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Reviewed in the United States on June 27, 2025
★★★★★ 5
Excellent
Format: Paperback
Excellent. Exactly what I was looking for , using for over the summer to keep practice going.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Perfect
Format: Paperback
Perfect & love these books.
Every year I get a grade up to get my child ready for the next. My child loves these books.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
BEAUTIFUL.
Size: 1-Pack, Style: Zinnia Dahlia
Great seeds, good germination.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026