--- product_id: 663485051 title: "ProtoArc Ergonomic Coccyx Seat Cushion for Office Desk Chair" brand: "protoarc" price: "504.05 DT" currency: TND in_stock: true reviews_count: 13 url: https://www.desertcart.tn/products/663485051-protoarc-ergonomic-coccyx-seat-cushion-for-office-desk-chair store_origin: TN region: Tunisia --- # 5-zone ergonomic support for balanced posture High-density memory foam 125% denser than standard U-shape tailbone cut-out for pressure relief ProtoArc Ergonomic Coccyx Seat Cushion for Office Desk Chair **Brand:** protoarc **Price:** 504.05 DT **Availability:** βœ… In Stock ## Summary > πŸͺ‘ Sit Smart, Work Strong – Upgrade Your Comfort Game! ## Quick Answers - **What is this?** ProtoArc Ergonomic Coccyx Seat Cushion for Office Desk Chair by protoarc - **How much does it cost?** 504.05 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/663485051-protoarc-ergonomic-coccyx-seat-cushion-for-office-desk-chair) ## Best For - protoarc enthusiasts ## Why This Product - Trusted protoarc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Adaptive Memory Foam:** Premium 10cm thick foam molds perfectly to your body, maintaining shape and comfort all day. - β€’ **Portable & Practical:** Built-in handle, non-slip base, and removable washable cover make it easy to carry and maintain freshness. - β€’ **Universal Comfort Fit:** Standard size fits all body types, including pregnant women, perfect for office, travel, gaming, and more. - β€’ **Tailbone-Saving U-Shape:** Innovative cut-out design redistributes weight to eliminate coccyx pain during long hours. - β€’ **5-Zone Ergonomic Support:** Scientifically engineered zones provide targeted hip and thigh support for optimal posture. ## Overview The ProtoArc Ergonomic Coccyx Seat Cushion features a unique U-shaped tailbone cut-out and 5-zone high-density memory foam support, designed to relieve pressure and promote healthy posture. Crafted with breathable, hypoallergenic materials and a non-slip base, it’s perfect for office chairs, travel, and extended sitting sessions. Its portable design with a washable cover ensures lasting comfort and hygiene, making it a must-have for professionals seeking all-day ergonomic support. ## Description At ProtoArc, our mission is to deliver innovative workspace solutions that enhance comfort, boost productivity, and foster overall wellness. We believe that everyone deserves a workspace that not only meets their functional needs but also empowers them to thrive. Our vision is a world where work environments promote health, happiness, and high performance. Whether you're working tirelessly at your office desk, embarking on a long road trip, relaxing at home, or enjoying the great outdoors, our seat cushion offers exceptional comfort and support wherever you go Available in 3 sophisticated colors including classic black, sleek dark gray, and rich coffee, this seat cushion is not just a functional addition to your workspace but a stylish accent that complements any decor SC Butterfly Seat Cushion Travel Neck Pillow EC100 Ergonomic Chair EC200 Ergonomic Chair Ergonomic keyboard mouse Ergonomic keyboard ## Features - Innovative U-Shape Design: Unique tailbone cut-out even weight distribution, and raised sides for hip support. Pre-shaped foam molds to your body for exceptional comfort and support. Upgrade to optimal comfort with our coccyx cushion (18"L x 16"W x 4"H) and transform your sitting experience today. Note: For optimal comfort, 1.Please measure your seat size in advance to ensure a perfect fit. 2.we recommend this seat cushion for office chair for individuals weighing less than 100 kg. For weights exceeding 100kg, we recommend the upgraded version SC Butterfly XL - Ergonomic Seat Cushion: The split and orthopedic design helps disperse body weight evenly across the hips and thighs, encouraging a comfortable posture for long-sitting groups - Premium Certified Quality: With 5-zone ergonomic support, 23.5oz 10cm thick high-density memory foam, 125% denser than standard cushions, delivers firm, resilient support without flattening out; crafted with skin-friendly foam and breathable fabric, it retains shape for long-term use while complying with EU REACH SVHC ≀0.1% regulations for safe, reliable daily sitting - Ease Of Use: Built-in handle to make it easy to carry. Breathable cover with zipper closure for easy machine washing. Non-slip bottom ensures grip, especially on leather seats, for secure placement. Removable cover maintains freshness, while the non-slip feature enhances stability - Take Comfort Anywhere: ProtoArc seat cushion reduces pressure on lower back and hip for all-day comfort, perfect for office, home desk chairs, car seats, road trips, gaming chairs and wheelchairs. Standard size fits all body shapes, including pregnant women, ensuring superior support and comfort anytime, anywhere - Tips: 1. It may take 1-2 weeks to adjust to the cushion's shape for the first time. Many users have found it offers consistent comfort during prolonged use. 2.The cushion comes vacuum sealed so you will need to let it expand for an hour or two before first use ## Technical Specifications | Specification | Value | |---------------|-------| | Age Range Description | 3 years old+ | | Asin | B0D2Y1FMT6 | | Best Sellers Rank | 62,581 in Home & Kitchen (See Top 100 in Home & Kitchen) 130 in Back & Seat Cushions | | Brand Name | ProtoArc | | Colour | Black | | Country Of Origin | China | | Cover Material | Wool | | Customer Reviews | 4.3 4.3 out of 5 stars (2,548) 4.3 out of 5 stars | | Fabric Type | Pilling Resistant Cotton | | Indoor Outdoor Usage | Indoor | | Item Dimensions L X W | 45.7L x 40.7W centimetres | | Item Firmness Description | Soft | | Item Shape | Semicircular | | Item Thickness | 10.16 Centimetres | | Item Weight | 1 Kilograms | | Manufacturer | ProtoArc | | Manufacturer Part Number | SC Butterfly | | Material Features | Breathable, Hypoallergenic | | Model Name | SC Butterfly | | Model Number | SC Butterfly | | Number Of Items | 1 | | Number Of Packs | 1 | | Other Special Features Of The Product | Adaptive Memory Foam, Anti-Slip, Concealed Zipper, Pressure Distribution Design, Removable Cover | | Pattern | Plain | | Pillow Type | Furniture Cushion | | Pillowcase Length | 18 Inches | | Product Care Instructions | Dry Clean Only, Machine Wash | | Recommended Uses For Product | Reading, Sitting, Studying, Travelling, Working | | Size | L | | Sleeping Bag Filling Material | Memory Foam | | Style Name | Contemporary | | Unit Count | 1.0 count | ## Product Details - **Brand:** ProtoArc - **Colour:** Black - **Fill material:** Memory Foam - **Pillow type:** Furniture Cushion - **Size:** L ## Images ![ProtoArc Ergonomic Coccyx Seat Cushion for Office Desk Chair - Image 1](https://m.media-amazon.com/images/I/81EhqtIdQwL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Is this cushion suitable for someone weighing over 200 lbs?** A: or optimal support and durability, we recommend our SC Butterfly XL version for individuals over 200 lbs. This standard model is specifically designed for users under 200 lbs to ensure the perfect firmness and fit. **Q: Does this cushion slide around on leather car seats?** A: No, it features a textured non-slip bottom designed to grip smooth surfaces like leather car seats and office chairs. For extra security, you can also use the built-in handle to adjust it easily if needed. **Q: How long does it take for the memory foam to fully expand?** A: After unpacking from the vacuum seal, please allow 1-2 hours for the cushion to fully expand to its original shape. For best results, let it air out for 24 hours before first use. **Q: Can I wash the cover in the washing machine?** A: Yes, the outer cover is removable via a concealed zipper and is machine washable. We recommend using cold water and air drying to maintain the fabric's quality and breathability. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very good quality *by on Reviewed in the United Kingdom 19 October 2026* I am very happy with the seat cushion. I would recommend this product. ### ⭐⭐⭐⭐⭐ Comfortable sand firm. *by on Reviewed in the United Kingdom 1 September 2026* This is a great cushion, it’s extremely comfortable.Has helped my back pain tremendously and allows me to site for a period of time without pain. It doesn’t flatten down but isn’t to firm.Extremely pleased with it, I’ve even taken it with me on a flight and used it abroad.It’s not a small cushion but the Handel on the side makes it easy to carry. This is more expensive than most but worth the money. The cushion returns to its original shape as soon as you get off it. ### ⭐⭐⭐⭐⭐ Comfortable and convenient, without slipping at all. *by on Reviewed in the United Kingdom 23 October 2026* This is excellent for periods of extended office chair use. No more lower back or hip issues when reaching to make art work or use my home office space. It doesn't slip at all. ## Frequently Bought Together - ProtoArc Seat Cushion for Tailbone Pain Relief, Office Chair Cushion, Coccyx Cushion, Ergonomic Memory Foam Seat Cushion for Home, Car, Pressure Relief Pad for Hip, Coccyx, All Day Comfort - Black - Everlasting Comfort Doctor Recommended Memory Foam Seat Cushion for Office Chairs & Car Seat - Ergonomic Office Desk Accessories for Tailbone Pain Relief, Sciatica & Back Support - QUTOOL Lumbar Support Pillow for Office Chair,Office Home Essentials,Back Support Pillow for Car, Chair Cushions,Back Pain Relief Improve Posture,Mesh Cover Double Adjustable Straps --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/663485051-protoarc-ergonomic-coccyx-seat-cushion-for-office-desk-chair](https://www.desertcart.tn/products/663485051-protoarc-ergonomic-coccyx-seat-cushion-for-office-desk-chair) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-30*