The Chiroform Ultra takes many of Allseating best features and adds even more adjustability to make a unique and ergonomically customizable chair.

Ergonomic Design and Comfort:

Adjustable Lumbar Support: The chairs feature a double-curve backrest that provides superior lumbar support. This support is crucial for maintaining proper spinal alignment, reducing lower back strain, and ensuring comfort during extended periods of sitting.

Height and Backrest Adjustability:

The series includes options for adjusting the backrest and seat height. This adjustability ensures users of different statures can find a comfortable and ergonomically sound seating position. Proper adjustment can mitigate the risks associated with prolonged sitting, such as discomfort or spinal misalignment.

Seat Comfort: With multi-density foam, the chair's seat conforms to the user's body. This feature enhances comfort and reduces pressure points, which is beneficial during long hours of sitting​​​​.

Quality and Durability:

Build Quality: The series boasts a robust wood frame, indicating a commitment to structural integrity and longevity.

Material Durability: The use of materials like reinforced ballistic nylon back suggests durability, especially in preventing wear and tear. This choice of materials is particularly beneficial in work environments where chairs are used extensively and need to withstand constant use​​​​​​.

Customization and Adjustability:

Armrests: The availability of adjustable armrests enhances comfort and ergonomics, allowing users to position their arms in a way that reduces shoulder and neck strain.

Seat Depth: Some models offer seat depth adjustment, a feature that caters to users of different leg lengths, ensuring that the chair can accommodate a wide range of body types for optimal comfort and support​​​​.

Health Benefits:

Back Pain Prevention: The ergonomic design, especially the lumbar support, plays a significant role in preventing back pain, a common issue among office workers.

Posture Improvement: The chair's design encourages a healthy posture, which is crucial in avoiding long-term musculoskeletal issues​​​​.

Value for Money:

Comparison to Price: Priced between approximately $500 to $765, the chair's ergonomic features, build quality, and customization options present it as a valuable investment, especially considering the potential long-term benefits to user health and productivity​​​​.

Style and Aesthetics Options:

Office Compatibility: The Chiroform Ultra's design seems universally appealing for various office environments. Its professional appearance makes it suitable for different décor styles, although specific aesthetic options are not extensively detailed in the sources​​.

Brand Reliability and Warranty:

Manufacturer's Reputation: Allseating is known for creating robust and ergonomic office furniture, suggesting reliability and trustworthiness in their products.

Warranty and Support: While specific warranty details are not available in the provided sources, the build quality implies a product that is expected to endure and perform over time​​​​.

User Reviews and Experiences:

Lack of Detailed Reviews: Specific user reviews were not found in the sources. However, the chair's design and features suggest it would likely be positively received by users prioritizing comfort and durability in an office chair.

In conclusion, the Allseating Chiroform Ultra series stands out as a strong contender in the office chair market, especially for those seeking ergonomic design, durability, and customization. The chairs seem well-suited for intense work environments, offering features that promote comfort, health, and productivity.

Weight Rating: 350 lbs

Midback Dimensions:

Overall [Synchro Tilt]: 36.5" - 40" H | 28" W | 28" D

Overall [Deluxe Tilt J-Bar]: 38" - 41.5" H | 28" W | 28" D

Seat [Synchro Tilt]: 16.5" - 20" H | 21.5" W | 21" D

Seat [Deluxe Tilt J-Bar]: 18.25" - 21.75" H | 21.5" W | 21" D

Back: 20" H | 19" W 

Highback Dimensions:

Overall [Synchro Tilt]: 39.5" - 43" H | 28" W | 28" D

Overall [Deluxe Tilt J-Bar]: 41" - 44.5" H | 28" W | 28" D

Seat [Synchro Tilt]: 16.5" - 20" H | 21.5" W | 21" D

Seat [Deluxe Tilt J-Bar]: 18.25" - 21.75" H | 21.5" W | 21" D

Back: 23" H | 18.5" W

Fabric:

200+ textiles to choose from

Warranty:

12 year comprehensive parts and labor