XTREME MATS Undersink Mat Gray 37in x 19 1/4in - Cabinet Leak Shield

In this review the XTREME MATS Waterproof Undersink Mat is assessed as a straightforward, practical solution for protecting bathroom and kitchen cabinets from plumbing leaks and spills. The bottom line: it is best for homeowners, renters, and property managers who need an easy-to-install, durable driptray that actually contains water. The mat's ability to hold up to 3.6 gallons, its raised angled side walls, and the flexible low-density polyethylene construction are the single biggest reasons to buy, since they combine strong leak protection with simple installation and cleanup.

Key Features

• Perfect Fit: Sized for cabinet use with a bathroom-length option of 19 1/4in so it fits most vanity cabinets without extra trimming.
• High Capacity: The mat can hold up to 3.6 gallons of liquid, providing real containment in the event of a leak or product spill.
• Flexible, Durable Material: Made of waterproof, low-density polyethylene that bends to install through narrow openings and returns to shape once inside.
• Raised Side Walls: Angled, raised sides and a textured surface help keep stored items dry and prevent liquids from running out of the tray.
• Multipurpose Use: Works as an under sink driptray, shelf liner, or cabinet base protector for messy or disorganized cabinets and rental properties.
• Easy Maintenance: The mat is simple to remove, rinse, and reinstall for quick clean-up after spills or routine cleaning.

Who It's For

This mat is ideal for homeowners who want a low-effort, long-term solution to protect bathroom vanity cabinets and kitchen base cabinets from leaks, stains, and chemical spills. It suits renters and vacation home owners who need a nonpermanent protector that can be moved easily, and property managers who want reliable containment without complicated installation.

Those who should look elsewhere include users whose cabinet plumbing comes up through the floor of the cabinet without clearance, unless they are willing to modify the mat, and buyers who need heat-resistant or decorative liners specifically designed for visible shelving rather than concealed cabinet protection.

Pros & Cons

Pros

• Heavy-duty construction with no seams that customers report finishes cabinets neatly.
• High liquid capacity and tall side walls give confidence for leak containment.
• Flexible yet sturdy material allows installation through small openings and easy cleanup.
• Designed and engineered in the USA with a lifetime limited warranty against manufacturing defects.

Cons

• Mat may require modification if plumbing or supply lines come through the cabinet floor.
• Water sensor is sold separately, so active leak alerts are not included with the mat.

Specifications

Brand	Xtreme Mats
Color	Gray
Size	37in x 19 1/4in (bathroom fit)
Material	Low-density polyethylene (waterproof)
Liquid Capacity	Up to 3.6 gallons
Function	Under sink driptray, cabinet base liner, shelf liner
Warranty	Lifetime limited warranty against defects

Our Verdict

The XTREME MATS undersink mat is a practical, good-value choice for anyone looking to protect vanity and base cabinets from leaks and spills. It combines high containment, flexible installation, and easy maintenance into a single durable liner, making it especially useful in rental properties, vacation homes, and busy households that want reliable protection without complex setup.

Frequently Asked Questions

Will this mat fit my bathroom cabinet?
Measure the inside of your cabinet-this product is sized for bathroom cabinets at 19 1/4in depth and can be trimmed or adjusted if supply lines are not coming through the cabinet floor.

How much liquid can the mat hold?
The mat is designed to hold up to 3.6 gallons of liquid, providing robust containment for most under sink leaks.

Does the mat include a leak sensor?
No, water sensors are sold separately; the mat itself provides passive containment but not electronic leak alerts.