PrimaLoft® Classic Series

I-3017

ThermoPlume® Bio InsulationThermoPlume® Bio Insulation

The loft and softness of down, designed to return to materials found in nature.

Down-Like Feel + Aesthetic

Warm When Wet

Vegan Friendly

Returns to Materials Found in Nature

Close-up of white insulation feathers scattered on a black background, PrimaLoft ThermoPlume.

Close-up of white PrimaLoft ThermoPlume feathers scattered on a light background.

Two hikers wearing insulated jackets walking through a snowy forest.

Overview

Down-inspired comfort with a different future in mindDown-inspired comfort with a different future in mind

ThermoPlume® Bio delivers the lightweight warmth, loft, and packability people love about down, with the reliable performance of a high-quality synthetic fill. Designed to keep you comfortable in changing conditions, it maintains warmth even in wet weather and is engineered to return to materials found in nature over time. Whether you're packing for a weekend getaway or bundling up for everyday winter, ThermoPlume® Bio offers premium comfort without compromise.

Key Features

Light to carry. Easy to wear.Light to carry. Easy to wear.

3D-rendered illustration of a soft white mound of PrimaLoft ThermoPlume insulation.

Down-Like Feel + Aesthetic

Silky fiber clusters mimic the softness, loft, and cozy feel of natural down, creating the plush comfort people reach for when temperatures drop.

All features

The comfort of down, reimagined for what's nextThe comfort of down, reimagined for what's next

Related Products

An insulation for any needAn insulation for any need

Pile of white PrimaLoft ThermoPlume insulation fill, product shot.

I-3016

Down alternatives

ThermoPlume® InsulationThermoPlume® Insulation

A unique blend of fibers that delivers the look and feel of down, with reliable warmth in wet conditions.

Pile of white PrimaLoft ThermoPlume ReRun insulation fill, product shot.

I-3050

Down alternatives

ThermoPlume® ReRunThermoPlume® ReRun

ThermoPlume® has been specially designed to mimic the lightweight warmth, loft, softness and packability of down.

Pile of white PrimaLoft ThermoPlume insulation fill, product shot.

I-3052

Down alternatives

PrimaLoft ThermoPlume® P.U.R.E. InsulationPrimaLoft ThermoPlume® P.U.R.E. Insulation

The loft and softness of down, made using a lower-emissions manufacturing process.

Pile of white PrimaLoft ThermoPlume insulation fill, product shot.

I-3053

Down alternatives

ThermoPlume®+ThermoPlume®+

The look and feel of down, with reliable warmth in wet conditions.

Pile of white PrimaLoft Gold Luxe insulation fill, product shot.

I-2051

Down alternatives

Silver RISE InsulationSilver RISE Insulation

Ultra-soft, ultra-fine fibers that keep you warm, even in wet conditions.