Simms Heavyweight Baselayer Bottoms

The Simms Heavyweight Baselayer Bottoms are the perfect option for the angler fishing in freezing cold winter conditions. These bottoms are perfect for keeping the heat in and are a good option for wearing under your waders.

Crafted with cutting-edge stretch micro-grid fleece, these baselayer bottoms are your ticket to extended comfort and performance in chilly conditions. The micro-grid fleece blocks out the cold and provides a comfortable on skin feel.


The Heavyweight Baselayer Bottoms feature a smooth jacquard face coupled with a grid-fleece backside, offering the perfect blend of flexibility and warmth. This innovative fabric combination ensures maximum mobility without compromising on insulation.

These baselayer bottoms are equipped with micro-pockets that efficiently trap heat while simultaneously wicking away moisture. Whether you're trekking through snow or casting lines in icy waters, stay comfortably dry all day long.

Experience next-level comfort with a flat elastic waistband and a fly pouch designed with minimal seams. No more irritating rubbing or chafing, even during extended wear. Enjoy a snug, irritation-free fit that feels like a second skin.

Simms knows that flexibility is key to staying agile outdoors. That's why these baselayer bottoms feature stretch panels strategically placed from the lower calf to the ankle cuffs allowing for easy integration with bibs and waders.

The Simms Heavyweight Baselayer Bottoms is available in a range of sizes for you to choose from in our drop down menu and comes in a black colouration.

Key features:
Micro-grid fleece
smooth jacquard face
micro-pockets
Moisture wicking fabric
Flat elastic waistband
Minimal seam construction
Stretch panels from lower calf to ankle cuffs
Range of sizes available
Black colouration