Down Underquilt for Hammock – Selva 120 | Cumulus

Description

Down Underquilt for Hammock Selva 120 Cumulus

Ultralight down underquilt for summer hammock camping

Selva 120 is Cumulus’ ultralight down underquilt designed for sleeping in a hammock in warm conditions when low weight and small pack size are the top priorities. It provides insulation exactly where it is needed most, underneath your body.

When sleeping in a hammock, cold almost always creeps in from below. Selva 120 blocks airflow under your back and helps retain body heat throughout the night when nighttime temperatures remain clearly above freezing.

Features

• For ultralight trekking / summer use (not for cold sleepers)
• Filled with 120 g of down
• Down quality: 850 FP
• 3/4 length
• Weight approx. 250 g
• Comfort ~9 °C / Limit ~4 °C (measured together with the Taiga 150 top quilt)

Temperature rating

Selva 120 is designed for summer conditions and warm nights. When properly adjusted, it provides pleasant and even warmth without cold spots.

Comfort: approx. ~9 °C
Limit: approx. ~4 °C
(values measured together with the Cumulus Taiga 150 top quilt)

Note: This is not a winter model. For cooler nights and a longer season of use, Selva 450 and Selva 600 are more suitable options.

Construction and design

The 3D oval shape follows the natural form of the hammock and effectively protects the shoulders. The differential cut allows the down to loft freely without compression. The sewn-through construction keeps weight and pack size to a minimum. The 3/4 length offers an excellent weight-to-warmth ratio for summer use.

Differential cut construction means that the outer and inner fabrics are different sizes. This gives the down enough space to fully loft and trap air efficiently, resulting in more even and effective insulation.

Why is 3/4 length (150 cm) enough?

Selva 120 is a 3/4-length underquilt designed to insulate the most critical areas of the body: the back, lower back and shoulders. The legs can be insulated if needed with clothing or a lightweight sit pad. This approach significantly reduces weight and pack size without compromising sleeping comfort in summer conditions.

Materials

Insulation:

• 120 g of ethically sourced 850 FP Polish goose down

Fabrics:

• Toray Airtastic 19 g/m², 7D ripstop nylon
• DWR treatment to help repel light moisture

The down used by Cumulus is known for its excellent loft, long service life and outstanding warmth-to-weight ratio.

Dimensions and technical specifications

• Total weight: approx. 250 g
• Down weight: 120 g
• Down quality: 850 FP
• Length: 150 cm
• Width at shoulders: 110 cm
• Width at foot end: 95 cm
• Maximum user height: 205 cm
• Stuff sack size: 18 × 11 cm
• Stuff sack volume: 1.5 l

Setup and use

Selva 120 is quick and easy to set up:

• Suspension system included
• Fits most hammocks
• Adjustments are easy to make even while lying in the hammock
• Stays securely in place without constant readjustment

When properly adjusted, the underquilt lightly touches the hammock and maintains the loft of the down throughout the night.

In real use on the trail

On a summer night, when temperatures drop in the evening, Selva 120 prevents cold air from creeping under your back. Once properly adjusted, it does not need to be readjusted during the night. It stays in place and allows you to sleep peacefully. Its light weight and compact pack size make it an easy and worry-free choice for hiking, bikepacking and hammock camping in nature.

Fluff regularly

Caring for and fluffing down products is essential to maintain their insulation performance. During use and storage, down can become compressed, which reduces loft and insulating ability. Shake and fluff the product regularly, especially after removing it from the stuff sack, to allow the down to recover and trap air again. Always store down products loosely, preferably in the supplied storage bag, and avoid long-term storage in a tightly compressed state. Wash the product only when necessary, using a detergent specifically designed for down, and follow the manufacturer’s care instructions to preserve the properties of the down for as long as possible.

Who is Selva 120 best suited for?

• Hammock campers travelling in summer
• Ultralight hikers who value minimal weight and pack size
• Hikers and bikepackers
• Users who combine an underquilt with a lightweight top quilt or sleeping bag
• Not suitable for cold autumn nights or winter use

Summary

Cumulus Selva 120 is a carefully designed ultralight summer underquilt for hammocks that does exactly what it promises. It blocks cold air from below and improves sleeping comfort without unnecessary weight. It is a reliable choice for minimalist hammock and summer camping when you want to keep your setup simple and light.