SIHOO - B100 Ergonomic Office Chair with Footrest, Mesh Office Chair with Adaptive Dynamic Lumbar, Flip-up Arm, Dual-Back, 300lb - Black

SIHOO B100 ergonomic office chair designed specifically for individuals who sit for extended periods, this office chair features durable and flame-retardant wave-mesh material that ensures breathability, comfort, and long-lasting use.The chair is equipped with an adjustable and rotatable headrest, a high backrest, ergonomic lumbar support, and 2D adjustable armrests—seamlessly integrating technology into your daily life. All materials are made of high-strength PP, enhancing durability and extending the product's lifespan. The SIHOO Ergonomic Chair serves not only as an office chair but also as an executive chair or gaming chair, catering to diverse needs and preferences. It has passed rigorous SGS and BIFMA certifications, offering added safety assurance. The silent rolling casters provide smooth and quiet mobility, elevating your comfort without disturbance. In short, the SIHOO ergonomic chair meets all your seating needs.

Life doesn’t stick to one room, and neither should your chair. Whether you are grinding through emails in your home office, catching up on a show in the living room, or unwinding after a long day in your entertainment room, the SIHOO B100 ergonomic office chair is built to keep up without skipping a beat. Let us start with what matters most: your back. The adaptive dynamic lumbar support uses a dual-back design that actually responds to you. Lean in to focus, sit up straight for a meeting, or shift around mid-afternoon. This desk chair follows your movement so your lower back never feels locked in place. It is support that moves with you, not against you.Need a break? Pull out the smooth footrest, lean back, and suddenly your office chair becomes your personal escape. Whether you are taking a quick power nap between calls, settling in for a movie night, or stretching out during a long gaming session, the SIHOO B100 turns any space into a spot to truly relax. The 4D flip-up armrests give you total control over your posture. Adjust them up, down, forward, backward, or rotate them to fit your frame. When you are done, flip them up and tuck the chair neatly under your desk. Three recline angles let you switch from focused work to full-on lounge mode in seconds.The 3D ultra-wide headrest adjusts to support your neck naturally so your shoulders stay relaxed during long calls or typing marathons. The plush widened seat cushion spreads your weight evenly so there is no more shifting around after a few hours. And because nobody likes a sweaty back, the full mesh chair construction keeps air flowing whether you are deep in a spreadsheet or deep into a gaming marathon. Built with a reinforced metal base and a Class 4 SGS-certified gas lift, this big and tall office chair supports up to 300 lbs with quiet stable performance. The smooth casters glide silently across any floor so you will not disturb anyone working or relaxing nearby. Backed by 36 months of coverage, 30-day easy returns, and a support team that responds within 24 hours, the SIHOO B100 is more than an executive chair. It is the one place you can count on to keep you comfortable, focused, and ready for whatever comes next.

Engineered for those who demand lasting comfort and precision adjustability, this high-back ergonomic chair delivers head-to-toe support with +20% wider cushioning, +30% leg support, and 20% less hip pressure. Fine-tune your fit with an adjustable headrest, seat depth, lumbar curvature, and 5D armrests that move up/down, forward/back, swivel 360°, and flip up 90°. Switch effortlessly between 90° focus, 110° casual, or 135° recline modes, and enjoy full leg support with the retractable, breathable footrest that extends up to 10.2 inches. Built with a heavy-duty chrome base and quiet-rolling casters, this sturdy chair supports up to 300 lbs—making it the perfect ergonomic solution for home offices, gaming setups, or long workdays.