Perfect harmony.

Transitional styling that blends well with collaboration areas and group housing defines Composium® Sharp. This robust lounge seating collection offers three back styles, four valance styles and 11 foot styles to make it a comfortable seating choice for industrial, formal higher education or assisted living settings. Composium is rugged and easy to maintain with field-replaceable parts and durable steel rail construction that withstands tough environments. Our PatternMatch™ expertise ensures that every chair is a perfect match. Add an optional tablet arm or arm cap to create truly unique seating.

Composium is now even more convenient thanks to our new power modules. Crafted with minimal seams for smoother integration and a cleaner look, they can be installed on the fronts of all models. 

Composium Sharp club chair in Maharam Rove Rice textile, square back, 3/4 valance, square tapered legs in Amber Mahogany finish

Composium Sharp lounge seating in a modern setting.

Composium Sharp club chair, Momentum Infinity Pewter shell; Momentum Infinity Graphite (seat); Mezzanine Occasional round table, Medium Cherry finish


  • Club, settee and sofa sizes
  • PatternMatch expertise and multiple upholstery options
  • Durable steel rail construction
  • 3 back types — square, round and scalloped
  • 4 valance styles — full, integrated, 3/4 and arched 
  • 11 foot styles including casters, metal pole and wood
  • Optional clean-out space
  • Optional tablet arm and wood arm cap
  • Sustainable manufacturing and Take Back Program
  • 300 lb per seat weight capacity warranty
  • Optional power module available






Wood Finishes

Clear Maple

Medium Cherry

Amber Mahogany



Arms + Power

Right or Left Tablet Arms

Arm Caps

Power Module



Square Back

Round Back

Scalloped Back


3/4 Valance

Full Valance

Integrated Valance

Arched Valance


Non-Locking Caster, Black

Locking Caster, Black

Non-locking Caster, Silver

Locking Caster, Silver

Metal 1.5-inch Pole, Brushed Aluminum

Metal 1.5-inch Pole, Silver Powder Coat

Standard Plastic, Black

Wood Tapered Cylinder

Wood Tapered Square

Wood Tapered Square with Side Rails

Metal Angular, Brushed Aluminum


Composium construction

The unique SitOnIt Seating steel rail system creates a robust, durable understructure that withstands even the toughest environments. Each component is locked in place using multiple 5/16th grade 5 hex bolts through the rails. Arms are anchored by a high-performance molded joint system providing lasting durability and stability.

Extra strength monofilament webbing creates excellent resilience, while high-density foam provides comfort and rebound in a low-profile cushion.


  • Composium Brochure [3.2 MB]
  • Composium Price List – Current [868.2 KB]
  • Environmental Data Sheets [302.6 KB]
  • Collaboration Solutions Brochure [4.7 MB]
  • Healthcare Solutions Brochure [6.7 MB]
  • Composium AutoCad 2D Files [177.5 KB]
  • Composium AutoCad 3D Files [3.6 MB]
  • Composium Revit Files [6.6 MB]
  • Composium Sketchup Files [40.3 MB]
  • Feature Spotlight: Tablet Arm [335.0 KB]