---
title: "Sea To Summit Alto TR1"
name: "Sea To Summit Alto TR1"
brand: "Sea To Summit"
description: "Light three-season semi-freestanding tent for one person. The Alto TR1 tent will appeal primarily to those looking for a lightweight shelter but do not want to compromise on comfort and the number of features."
handle: "sea-to-summit-alto-tr1"
sku: "ATS2039-01160410"
ean: "9327868146697"
gtin: "9327868146697"
canonical_url: "https://gramino.com/p/sea-to-summit-alto-tr1"
html_url: "/p/sea-to-summit-alto-tr1"
md_url: "/p/sea-to-summit-alto-tr1.md"
locale: "en"
market: "eu"
currency: "EUR"
price: 452.1
price_formatted: "€452.10"
availability: "OutOfStock"
item_condition: "NewCondition"
category: "Tents"
category_path: "/c/sleep/tents"
breadcrumbs:
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    url: "/"
  - name: "Sleep"
    url: "/c/sleep"
  - name: "Tents"
    url: "/c/sleep/tents"
  - name: "Sea To Summit Alto TR1"
    url: "/p/sea-to-summit-alto-tr1"
last_updated: "2026-10-13"
---

# Sea To Summit Alto TR1

Brand: Sea To Summit · Category: [Tents](/c/sleep/tents.md)
Freestanding: Partly · Number of vestibules: 1 · Tent construction type: Double-wall

## Offer

- Price: €452.10
- Availability: Out of stock
- Condition: New
- Buy on the website: [HTML product page](/p/sea-to-summit-alto-tr1)

## Description

Light three-season semi-freestanding tent for one person. The Alto TR1 tent will appeal primarily to those looking for a lightweight shelter but do not want to compromise on comfort and the number of features.

## Who is it suitable for?

Ultralight well-designed tent for 1 person.

## Specifications

The goal of Sea To Summit was not to bring the lightest tent to the market, but a tent that **would excel in all aspects**. The designers took their time with the development; the Sea To Summit tents were in development for several years, but we believe it was worth it.

The tent features a unique **Tension Ridge construction** (a pole that runs across the tent). This construction offers several advantages:

- **more space** in the interior in the shoulder and head area
- the steeper walls ensure **better water drainage** during rain
- **great ventilation** and minimization of condensation inside
- **more spacious vestibule**

The Alto TR1 has **one entrance** and **one vestibule** for gear storage. The tent features a **semi-freestanding** construction, meaning you need to stake down two corners (specifically those at the head) for the tent to achieve its full shape. All zippers have two sliders and are equipped with ergonomic pulls. The rainfly has zippers protected by a storm flap with Velcro.

## Features and details

- Ultralight yet durable tent **construction (pole) DAC NSL** with color-coded elements for easy and quick tent setup.
- **Maximum durability** and **excellent waterproof properties** due to top-quality materials including DAC poles, YKK zippers, aluminum components, and taped seams PEU.
- **FairShare storage system:** you can pack the tent into three bags (sacks). The individual bags can be used inside the tent as pockets for storing gear, keeping everything you need at hand.
- **Light pole:** the tent pole cover also serves as a light diffuser. Simply insert a headlamp into it and attach it inside the tent above your head.
- The rainfly can be set up first for easy construction in the rain.
- The package includes 10 Ground Control tent stakes and 4 removable guy lines.
- To extend the lifespan of the tent floor, we recommend using a footprint [Sea to Summit Alto](/p/sea-to-summit-alto-lightfoot-footprint) - sold separately, or at least [tyvek](/p/tyvek-groundsheet-250-x-150-cm).
- A Sea To Summit large mummy-shaped sleeping pad fits into the tent (e.g., [Ultralight Insulated](/p/sea-to-summit-ultralight-insulated)).

## Materials and construction

- The interior 15 cm elevated floor with a "bathtub" is constructed from 15D nylon with a water column of 1200 mm.
- Very lightweight inner mesh made from 15D polyester ensures maximum ventilation. Its dark gray color provides excellent visibility.
- The rainfly made of 15D nylon with a waterproof coating of silicone/polyether polyurethane (PeU) ensures long-lasting waterproofness and durability.
- **Tension Ridge System** – provides significantly more living space.
- **Apex Vent ventilation openings** – at the highest point of the tent, there is a large ventilation opening that effectively exhausts warm air to prevent condensation. It can be easily closed with a zipper from inside the tent.
- **Quick Connect Foot Clip** – aluminum clip in the corners of the rainfly that easily attaches to the inner tent. It is sturdier than plastic buckles that can break.

## Specifications and dimensions

- Total weight: 1 096 g (with all bags, repair kit – weighed by us)
- Minimum weight: 975 g (without stuff sacks, repair kits, with 6 stakes)
- Floor length: 215 cm
- Width at head: 65 cm
- Width at the feet: 60 cm
- Pole diameter: 8,7 and 9 mm
- Floor area: 1,8 m2
- Vestibule area: 0,7 m2
- Inner height: 100 cm
- Tent height: 108 cm
- Packed dimensions: 44 x 11 cm

## **The package contains**

- rainfly (340) + stuff sack (15 g)
- inner tent (330 g) + stuff sack (18 g)
- 10 stakes (80 g) + stuff sack (8 g)
- 4 detachable guy lines Ground Control (18 g)
- construction – DAC NSL (257 g) + repair sleeve + stuff sack (22 g)
- adhesive repair kit (8 g)

[Video](https://youtu.be/yzXft9VslPo)

[Video](https://www.youtube.com/watch?v=MmN13Qwzjng&ab_channel=SeatoSummit)

## Specs

- Color: Green
- Freestanding: Partly
- Number of vestibules: 1
- Tent construction type: Double-wall
- Total number of entrances: 1
- Number of persons: 1
- Season: 3-season
- Floor water column: 1200 mm
- Floor material: 15D ripstop nylon
- Inner tent material: 15D Polyester Mesh
- Pole material: DAC Featherlite (NSL)
- Rainfly material: 15D ripstop nylon
- Rainfly water column: 1200 mm
- Packed dimensions: 46 × 10 cm
- Floor area: 1.81 m²
- Floor dimensions: 215 × 107/61 cm
- Vestibule area: 0.7 m²
- Tent inner height: 100 cm
- Weight: 1096 g
- Woocommerce product id: 70983
- Brand: Sea To Summit

## Related

- [Sea To Summit Alto LightFoot Footprint](/p/sea-to-summit-alto-lightfoot-footprint.md)
- [Big Agnes Copper Spur UL1 Bikepack](/p/big-agnes-copper-spur-ul1-bikepack.md)
- [MSR FreeLite 1](/p/msr-freelite-1.md)
- [Tyvek 75x230 cm (for 1 person)](/p/tyvek-groundsheet-230-x-75-cm.md)
- [Sea To Summit Alto TR2](/p/sea-to-summit-alto-tr2.md)
- [Gramino Ultralight Sit Pad](/p/gramino-ultralight-sit-pad.md)
- [Sea To Summit Telos TR2](/p/sea-to-summit-telos-tr2.md)
- [EVA Foam Pad 3 mm](/p/eva-foam-pad-3-mm.md)

## Shipping and returns

- [Shipping and payment](/shipping-payment)
- [Returns](/return-order)

## Images

- ![Sea To Summit Alto TR1](https://media.gramino.com/medusa/255e365d75c0291f37b1764f05848e7a-01KWHVGY50D4ZZ0HBD2TZNVD47.jpg)
- ![Sea To Summit Alto TR1](https://media.gramino.com/medusa/59be420892d1db9d97643693380d7fb6-01KWHVGY79T1F1604682WCAD1V.jpg)
- ![Sea To Summit Alto TR1](https://media.gramino.com/medusa/f7e3d4a8a750ff541d9bd97dcc8f7031-01KWHVGY90EJ793MKHFQ6PC1MM.jpg)
- ![Sea To Summit Alto TR1](https://media.gramino.com/medusa/802ca96d253fa806bcb9400ece0428c5-01KWHVGYAFQ00836EQ075K9C2M.jpg)
- ![Sea To Summit Alto TR1](https://media.gramino.com/medusa/6a95a1fa6178554ec229a1a8436914e4-01KWHVGY96ST3QCS73KMNP5D3C.jpg)
- ![Sea To Summit Alto TR1](https://media.gramino.com/medusa/efb1d9a6a933f8be3637f79a462bb0bd-01KWHVGYADHJVFZ21MGP3JQNEJ.jpg)
- ![Sea To Summit Alto TR1](https://media.gramino.com/medusa/04dbf25593c400c5d5f1f2c017c9a552-01KWHVGYB6KWZQ5FWFJ4RGZD32.jpg)
- ![Sea To Summit Alto TR1](https://media.gramino.com/medusa/e930f0d306d0e2721a2d65e7006e5bdb-01KWHVGYCK6YHMX52JV0EQVWER.jpg)

## Identifiers

- SKU: ATS2039-01160410
- EAN: 9327868146697
- Handle: sea-to-summit-alto-tr1
- Brand: Sea To Summit

This product is also available as [HTML](/p/sea-to-summit-alto-tr1).

Category: [Tents](/c/sleep/tents.md) · [Sitemap](/sitemap.md)

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