{"product_id":"sei-mio-the-bed-spreader-under-the-mattress-restraint-system","title":"Sei Mio Bed-Spreader – Adjustable Under Mattress 4-Way Restraint System","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Sei Mio Bed-Spreader transforms any standard bed into a versatile restraint platform without requiring specialized furniture or permanent modifications. This four-point restraint system utilizes under-mattress positioning to create secure anchor points at each corner of the bed, allowing for spread-eagle positioning and full-body restraint scenarios. The system features fully adjustable strapping that accommodates mattresses from single to super king size, making it suitable for various bed configurations.\u003c\/p\u003e\n\u003ch3\u003eConstruction and Materials\u003c\/h3\u003e\n\u003cp\u003eThe restraint system consists of four individual strap assemblies constructed from durable nylon webbing designed to maintain tension during use. Each strap features heavy-duty stitching at stress points and adjustable buckles that allow precise length modification. The cuffs incorporate padded interior surfaces to distribute pressure evenly across wrist and ankle areas, reducing discomfort during extended sessions. Velcro closure systems on each cuff enable rapid application and removal when needed.\u003c\/p\u003e\n\u003cp\u003eThe central connection point features a metal carabiner that serves as the hub where all four straps converge under the mattress. This design distributes tension evenly across the system and provides structural integrity to the entire assembly.\u003c\/p\u003e\n\u003ch3\u003eAdjustability and Fit\u003c\/h3\u003e\n\u003cp\u003eEach of the four straps extends to accommodate beds ranging from single (90cm width) through super king sizes (180cm+ width). The adjustable buckles slide along the length of each strap, allowing users to customize the distance between the mattress edge and the attachment point. This adjustability ensures proper positioning regardless of mattress thickness or bed frame design.\u003c\/p\u003e\n\u003cp\u003eThe cuffs themselves attach to the main straps via quick-release clips, enabling users to remove them entirely when not in use or to reposition them along the strap length for different body sizes and limb proportions.\u003c\/p\u003e\n\u003ch3\u003eEase of Use\u003c\/h3\u003e\n\u003cp\u003eInstallation requires no tools or assembly. Users simply position the four straps in an X-pattern beneath the mattress with the central carabiner at the center point. The straps extend outward to each corner, emerging at the sides and ends of the bed. Once positioned, the system remains securely held by mattress weight, requiring no additional fastening to the bed frame.\u003c\/p\u003e\n\u003cp\u003eThe Velcro cuff closures allow attachment and release within seconds. The overlapping design provides a secure hold while remaining accessible for immediate removal if required. The quick-release nature of the system makes it suitable for users who prioritize safety and ease of exit.\u003c\/p\u003e\n\u003ch3\u003ePositioning Options\u003c\/h3\u003e\n\u003cp\u003eThe removable strap design and central carabiner connection enable multiple configuration options beyond standard four-point restraint. Users can detach individual straps to create three-point systems, or utilize the carabiner as an anchor point for additional equipment. The adjustable nature of each strap allows for varied tension levels—from loose positioning that permits limited movement to taut restraint that restricts mobility entirely.\u003c\/p\u003e\n\u003ch3\u003eStorage and Discretion\u003c\/h3\u003e\n\u003cp\u003eWhen not in use, the system can be stored beneath the mattress without removal, remaining completely hidden from view. Alternatively, the straps fold compactly for storage in drawers or closets. The black nylon construction and minimal hardware create a low-profile appearance that doesn't immediately identify the item's purpose to casual observers.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Four-point under-mattress restraint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrap Material:\u003c\/strong\u003e Heavy-duty nylon webbing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCuff Material:\u003c\/strong\u003e Padded nylon with Velcro closure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware:\u003c\/strong\u003e Metal carabiner central connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBed Compatibility:\u003c\/strong\u003e Single, double, king, and super king mattresses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCuff Closure:\u003c\/strong\u003e Velcro wrap-around design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAttachment Method:\u003c\/strong\u003e Under-mattress positioning (gravity-secured)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCuff Features:\u003c\/strong\u003e Removable, adjustable position along strap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 847878001377\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sei Mio","offers":[{"title":"Default Title","offer_id":44168896118849,"sku":"SM-001","price":44.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/7303\/7633\/files\/sei-mio-the-bed-spreader-front-sm-001_1.jpg?v=1783758545","url":"https:\/\/adultstuffwarehouse.co.uk\/products\/sei-mio-the-bed-spreader-under-the-mattress-restraint-system","provider":"Adult Stuff Warehouse","version":"1.0","type":"link"}