Double-Layer Construction for Maximum Warmth

The key feature of the Shimano IN-070Z is its double-layer construction using thick grid-structured fabric.

The grid structure creates an insulating air layer between the skin and the fabric. This trapped air helps retain body heat and provides additional thermal insulation.

The two-layer construction creates a warm, enveloping feel, making the IN-070Z particularly suitable for the coldest days of the fishing season.

The grid structure also helps reduce the initial cold sensation when the fabric comes into contact with the skin, which is especially useful when getting dressed during freezing winter mornings.

Extra-Thick Thermal Base Layer for Extreme Cold

The IN-070Z is not a lightweight thermal shirt. Shimano has developed it as a Double Extra Thick inner layer for situations where warmth and comfort are the highest priorities.

It is particularly suitable for:

• winter boat fishing;
• winter carp fishing;
• cold-weather spinning;
• saltwater fishing in winter;
• predator fishing;
• extended outdoor activities;
• winter layering systems.

Quick-Drying Performance

Despite its thick and highly insulating construction, the Shimano IN-070Z features quick-drying performance.

Even during winter, active fishing can cause perspiration, while the cuffs and sleeves may become wet during fishing. The fabric helps absorb and release moisture efficiently, helping maintain a comfortable and relatively dry feel.

This makes it particularly suitable as the first layer of a winter fishing clothing system.

4-Way Stretch for Freedom of Movement

The IN-070Z uses 4-way stretch fabric to avoid restricting movement during active fishing.

The material stretches vertically and horizontally, allowing the shirt to follow the body's movements during:

• casting;
• walking and moving between fishing spots;
• rod handling;
• reel operation;
• lure manipulation;
• boat fishing.

This means the extra-thick construction provides warmth without unnecessarily limiting mobility.

Shimano IN-070Z as a Winter Base Layer

The IN-070Z is designed as part of a complete layering system, where each clothing layer has a specific function.

Worn directly against the body, the thermal shirt provides the primary layer of insulation. A mid-layer and outer jacket can then be added according to temperature, wind and weather conditions.

Shimano's official Autumn/Winter 2026 layering system places the IN-070Z in the Warm Layering category, designed for severe cold and fishing situations with relatively low activity levels.

Key Features

• Model: Shimano IN-070Z
• Product: Dry Inner Shirt Double Extra Thick
• Extra-thick thermal base layer
• Double-layer grid-structured fabric
• Insulating air layer
• Excellent heat retention
• Quick-drying performance
• 4-way stretch fabric
• Excellent freedom of movement
• Designed for winter layering systems
• Designed for extremely cold conditions
• Suitable for winter and boat fishing

The official material composition is 91% polyester and 9% polyurethane.

Shimano IN-070Z – Extra Warmth for the Coldest Fishing Days

When temperatures drop significantly, a high-quality base layer is the foundation of an effective winter fishing clothing system. The Shimano IN-070Z Dry Inner Shirt Double Extra Thick combines a double-layer insulating grid structure, trapped-air thermal insulation, quick-drying performance and 4-way stretch.

The result is an extra-warm thermal fishing base layer designed to provide comfort during long periods outdoors and demanding winter fishing sessions.

Shimano IN-070Z – an extra-warm thermal base layer designed for maximum comfort when fishing in extremely cold conditions.