An apparatus for improving blood flow in a user's leg and improving posture is disclosed herein. The apparatus is a portable seating cushion that a user may sit upon, which improves blood flow by reducing point-pressure that may otherwise be applied to nerves and blood vessels in a user's leg, including the sciatic nerve. Moreover, the portable seating cushion improves posture by creating a forward pelvic tilt, which causes the rest of the user's shoulders, spine, back, and neck to come into alignment when the user sits on the cushion.

A chair support shell has an integral back portion, seat portion, and joining portion between the back portion and the seat portion. At least a major portion of the support shell comprises a compliant structure, the compliant structure having a plurality of cells interconnected by a plurality of resilient members. The compliant structure provides compliance in the seat portion, compliance in the back portion, and compliance in the joining portion. The compliant structure enables recline of the back portion relative to the seat portion.

A body support structure includes a structural lattice structure having a first stiffness, and a compressive lattice structure supported by the structural lattice structure and having a second stiffness less than the first stiffness. A skin lattice structure is supported by the compressive lattice structure, wherein the skin lattice structure is resistant to shear deformation in response to a normal force and is expandable in a direction transverse to the normal force.

An ergonomic chair, includes: a support structure, a seat assembly, and a backrest. The seat assembly includes a seat and a seat mount arranged on the support structure. The backrest is rotatably connected to the support structure through a backrest support, and the backrest is configured to be rotatable and fixed relative to the seat assembly.

The present disclosure relates to a breathable cushion. The cushion includes a thigh support portion, a hip support portion, and a waist and back support portion. The thigh support portion includes a plurality of thigh support structures each having an opening structure; the hip support portion includes a plurality of hip support structures each having an opening structure; and the waist and back support portion includes a plurality of waist and back support structures each having an opening structure. The area of the opening structures of the thigh support structures and/or the area of the opening structures of the waist and back support structures is greater than the area of the opening structures of the hip support structures. The cushion has the following advantages. The cushion has an ergonomic design and structure, and provides reasonable and reliable supports. In addition, the light-weight and highly comfortable cushion has good air permeability.

A novel lightweight, high stability ergonomic chair, enabling sitting, and leaning in a perched intermediary position between sitting and standing. An inclined saddle type seat is supported by three legs. A forward chair leg is located between the feet of, and beneath the center of gravity of the seated person. Two chair legs extend rearward. The chair permits rocking backwards, diagonally forward, and rocking about the forward chair leg. This “active seating” provides for easy transitions between sitting and standing, shifting of weight, and conveys an open positive body language. Multiple embodiments and architectures are disclosed multiple configurations including; rigid, folding, and for quick disassembly. The chairs may be constructed of various rigid and flexible materials, with optional features including; armrests, footrests, caster wheels, cushioning, and a standing desk type work surface. The chair eliminates the need for connection to a base platform beneath the user's feet.

The present floor seat apparatus includes a base, a seat removably seatable in the base, and a tray engagable to the base. The base may be used as a seat by itself, with or without the seat and with or without the tray. The base includes a post. The seat includes a post through opening that engages the post and positions the seat in the seat receptacle of the base.

A seat apparatus includes a base having a central ridge structure on the top of the base. The central ridge structure is round on the top and slopes downward from front to back. A secondary ridge structure may be included on top of the central ridge structure. Using the seat apparatus, a person with a hemorrhoid condition can sit on the seat apparatus, and using their own body weight, create pressure between the affected area and the central ridge structure. The pressure bias the hemorrhoid to be repositioned in the user's body, relieving discomfort and, with long term use, can improve sphincter control to better prevent hemorrhoid conditions.

An ergonomic massage chair is configured with back and bottom structures held up by a pair of legs. The various support bars and structure of the ergonomic massage chair may be comprised of, in typical implementations, metal, but plastic and other suitable structures are also possible. The back structure has perimeter support bars that form the base of the back support, and horizontal support bars extend from a left perimeter support bar to a right perimeter support bar. The bottom structure likewise has a perimeter support bar that forms the structure of the bottom. A horizontal support bar extends from a left perimeter support bar to a right perimeter support bar. Nodes are attached to the ergonomic chair, and stability balls fit inside openings created by the support bars and nodes. A cover having memory foam pillows therein encapsulates the chair to provide users with customized setups that suit them.

A ventral support for use in an ergonomic work station chair, the ventral support comprising an adjustable Y axis member and a support unit, the support unit pivotally and extendibly attached to the adjustable Y axis member, wherein the support unit is heart-shaped and includes a rear, a face, and a top therebetween, the face including a right lobe and a left lobe, a clavicles support, which has a right side and a left side, is raised, is proximate the top and is horizontally disposed, and a central ridge, which extends vertically downward from the clavicles support, wherein the right lobe, the right side and the central ridge define a right concavity in the face and the left lobe, the left side and the central ridge define a left concavity in the face.