Office Chair for Online Classes

It is recommended to prioritize models with mesh fabric material, strong cushion support, and comprehensive adjustment functions, such as the Sihoo B100Pro or other models from the same brand, while further screening based on height and sitting habits.

Material Selection: Mesh Offers Better Breathability, Sponge Requires Attention to Fit

Mesh fabric is highly breathable, making it suitable for prolonged use as it reduces stuffiness, especially in summer or for those who sweat easily. For example, the Sihoo B100Pro features a mesh design that keeps the buttocks and back dry. Sponge cushions, on the other hand, offer varying degrees of softness and enveloping feel, but attention must be paid to fit: some sponge chairs cannot adjust the cushion length, which may be unfriendly to taller users or those with a forward-leaning sitting habit. If sponge material is preferred, choose a model that supports cushion length adjustment to ensure no pressure on the thighs at the edge of the cushion.

Function Priority: Cushion Support > Lumbar Support, Comprehensive Adjustment Functions Required

When sitting for long periods, 75% of body weight is concentrated on the buttocks, making cushion support more important than lumbar support. Prioritize models with a slightly curved front end of the cushion that can disperse pressure and prevent numbness in the buttocks after prolonged sitting. Adjustment functions should cover seat height, seat depth, and backrest angle:

• Seat Height: After adjustment, feet should naturally touch the ground, avoiding suspension or knees higher than the hips;
• Seat Depth: Ensure there is a 2-3 finger space between the back of the knee and the edge of the cushion to prevent blood vessel compression;
• Backrest Angle: Support adjustment from 100° to 135° to meet the needs of sitting upright during online classes or leaning back for rest. For example, the 4D linked armrests of the Sihoo B100Pro can adjust synchronously with the backrest angle, preventing arm suspension and suitable for long hours of typing or note-taking.

Cost-Effective Brands and Model Recommendations

In the price range of 400-2000 yuan, brands such as Sihoo, Hbada, and Gedeli are frequently mentioned, but attention should be paid to the support and adjustment range of specific models:

• Sihoo B100Pro: Well-designed ergonomically, suitable for prolonged sitting scenarios, but confirm whether the seat depth supports users taller than 180cm;
• Hbada P3: Comprehensive adjustment functions, but the mesh fabric is relatively hard, suitable for users who prefer firm support;
• Gedeli G19: High cost-effectiveness, but the lumbar support adjustment range is limited, suitable for users with low lumbar support needs.

Screening Recommendations: Choose a seat height adjustment range based on height (usually 45-55cm), select the maximum backrest angle based on sitting habits (above 120° is suitable for leaning back for rest), and prioritize test sitting or referring to detailed reviews to ensure the material and functions meet personal needs.