The Simond MT500 trekking mattress from Decathlon proves that a lightweight sleeping pad under £50 can deliver impressive comfort, quick inflation, and compact pack size, outperforming gear that costs twice as much. Priced at £44.99 for the standard L version and £49.99 for the XL, this mat is designed for summer camping, festivals, and backpacking trips where weight and space are critical.
What Makes the MT500 Stand Out
According to reviewer Linda Geddes, the MT500 XL (195cm by 60cm) offers 5cm of cushioning through lengthways air chambers, which effectively absorb pressure from rocks and uneven ground. The mat inflates by mouth in less than a minute via a one-way valve, and silicone patches on the surface prevent sleeping bags from sliding off. Rolled up, it measures 28cm by 10.5cm and weighs 600g, comparable to a 1-litre water bottle.
The R value of 1.5 indicates sufficient insulation for overnight temperatures above 8°C, making it ideal for late spring to early autumn use. Colder conditions require the three-season insulated version, which is orange and costs £64.99 (L) or £69.99 (XL).
Testing and Performance
Geddes tested the mat on a hard wooden floor over sharp stones, lying on her back and side to assess comfort. She reports that the lengthways chambers smoothed out pressure points, and the mat stayed inflated and water-resistant during an overnight test in late April. Durability tests included jumping on it with bare feet and scraping it with a pointed stone; minor tears can be repaired with self-adhesive patches, and Decathlon offers a two-year warranty.
One drawback is a convex shape when inflated, which flattens under a sleeping bag and pillow. The grooves of the air chambers are barely perceptible once in a bag. While not as luxurious as premium pads like the Therm-a-Rest NeoLoft or Vango Shangri-La Lux 16 Grande, the MT500 delivers excellent value for its price.
Sustainability and Verdict
Like most inflatable mats, the MT500 is made from synthetic materials that are hard to recycle. Geddes notes that longevity is key; with a 4.5/5 rating from hundreds of user reviews, the mat appears durable enough for several seasons of regular use. Its small pack size also reduces transport emissions compared to bulkier alternatives.
Geddes concludes: “For the price, the Simond MT500 XL trekking mattress offers an excellent blend of comfort, packability and ease of use. It’s quick to inflate, simple to deflate, and packs down small enough for a rucksack. At this price, it’s difficult to beat.”
