Sea to Summit Alto TR1 Tent

The Alto is the new flag ship design for a practical, ultralight tent from Sea to Summit. Packed with innovative features this lightweight tent has a good amount of space and is designed to be user friendly.

Sea to Summit says:

The one-person, semi-freestanding Alto TR1 is where ultralight tents meet class-leading space and comfort for three-season adventures. Our patent-pending Tension Ridge Architecture means this tent has unmatched useable room, a high ceiling, an oversized door and a large vestibule for storing gear. A truly effective and adjustable ventilation system and multiple set-up modes also make this backpacking tent the epitome of comfort and versatility.

Though the Alto TR1 weighs only 938g | 2lb 1.1oz (minimum trail weight), it’s packed full of intuitive features, like our FairShare Storage System, which is comprised of dual-use storage bags that can be clipped into your tent to create extra storage and our illuminating Lightbar. With its mesh inner and DAC’s world-class Featherlite NFL and PRESSFIT pole sections, the ultralight Alto TR1 is primed for fast-and-light solo exploits.

Sea to Summit's Alto TR1 Tent is the lightest in the new range of tents. The Alto is designed with a balance of low weight and plenty of usable space and it does this really well. The full range of tents use the innovative Tension Ridge pole design which increases head height, creates more space and improves ventilation. The placement and design of the vents is also a well thought out aspect that allows you to keep condensation to a minimum. There is a really good amount of internal space and vestibule space for sitting up in, cooking and storing all your kit.

There are a range of interesting features included which some people will love and others will probably find gimmicky. However, it's great to see any company trying new ideas such as the Lightbar, FairShare storage system which then doubles up for additional storage pockets and a number of practical touches with guy cords and pegs. The set up is designed to maximise versatility with a number of options including fly only, inner only and other more interesting ones depending on the weather. This normal TR version comes with a full mesh inner. This keeps the weight down compared to the Plus version and provides much greater breathability and ventilation for camping in mild conditions.

- Reviewed by BasecampGear

Help and advice:

• Patent-pending Tension Ridge Architecture creates class-leading usable space, height and climate control.
• Oversized Apex Vent efficiently expels hot air to prevent condensation build-up.
• Baseline and Apex Vents work together to create superior airflow and are easily adjusted from inside the tent.
• FairShare Storage System allows you to distribute weight evenly between friends or within your pack.
• Lightbar: tent pole bag doubles as a ceiling-mounted light-diffuser, when used in combination with your headlamp.
• Patent-pending and easy-to-use Quick Connect Tent Feet allow one-handed attachment and adjustments.
• Ultimate versatility with five set-up configurations: Dry Set-Up, Fly Only, Inner Only, Partial Fly, and Classic Mode.
• Large vestibule provides plenty of space to store gear and protect it from the elements.
• Tall-wide doors allow for comfortable access and expansive views outside for a more liveable interior.
• Easily adjustable Ground Control Guy Cords with quick-connect V-Toggles can be attached or removed from multiple guy loops to suit wind conditions.
• Available accessories: Bigfoot Footprint, Lightfoot Footprint, Gear Loft, additional Ground Control Light Tent Pegs and Guy Cords.

Our Specs

• Inner tent weighs: 326g
• Flysheet weighs: 338g
• Poleset weighs: 266g
• Total weight for comparison: 930g (excludes pegs and bags)
• x9 pegs supplied weigh: 66g

Sea to Summit Specs

• Capacity: 1 Person
• Minimum trail weight: 938g (includes fly, inner + poles)
• Fast fly weight: 781g (this includes fly, poles + footprint)
• Packaged weight: 1110g
• Outer tent dimensions (HxWxL): 109 x 169 x 223cm
• Inner tent dimensions (HxWxL): 105 x 107 x 215cm
• Packed size: 11 x 11 x 44cm
• Door height: 108cm
• Floor area: 19.5 ft / 1.81 m2
• Total area: 27 ft / 2.5 m2
• Vestibule area: 7.5 ft / 0.7 m2
• Season: 3 season
• Seam sealed: Yes
• Number of vestibules: 1
• Number of pegs included: 9
• Number of guylines: 2 x 1m, 2 x 2.2m
• Fits Sea to Summit Mats: 1 Large Tapered
• Repair kit: Yes (includes self-adhesive fabric repair patches + pole repair splint)

Construction & Materials

• Silicone and Polyether Poly-Urethane (Sil-PeU) coated 15D fly fabric provides excellent hydrolytic stability for durable waterproof performance.
• 1200mm waterhead fly and floor with fully-taped and waterproof seams.
• Ultra-lightweight 15D polyester high-airflow mesh for maximum ventilation and no-see-um insect protection.
• DAC Featherlite NFL and PRESSFIT pole sections with varying diameters for maximum strength at minimum weight.
• Strong 7075-T6 aluminium alloy Ground Control Light Tent Pegs provide secure anchoring thanks to the custom TriPoint, multi-notch design.