Product highlights

Weight

26g

Volume

100ml

Composition

Silica Silylate, Isopropyl Alcohol, Cyclomethicone

Packaging

Resealable

Aruta

Thunder

Name: Thunder
Brand: Aruta
SKU: ARCHTHNLCQ100SG
Price: 18.00 SGD
Availability: InStock

$18.00

Lightning-fast dry. Storm-level grip.

Thunder is our silica-enhanced liquid chalk built for humidity. It flashes off quickly, lays down a thin, even layer, and holds through long burns. Use it as a base layer under KUMO chalk or run it solo for low-dust sessions on comp volumes, fiberglass macros, and slick stone.

Product variants

Product highlights

Weight

26g

Volume

100ml

Composition

Silica Silylate, Isopropyl Alcohol, Cyclomethicone

Packaging

Resealable

In stock, ready to ship

Pickup currently unavailable at Ground Up Climbing Gym

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Pairs well with

In stock! Ships within 1-2 business days.

Athlete-tested, data-led design.

Complimentary shipping & returns

Thunder

$18.00

Tech Specs

What’s inside

Silica Silylate, Isopropyl Alcohol, Cyclomethicone

Best for

- High-humidity sessions, comp-style boulders, and long redpoint burns
- Base layer under KUMO Powdered/Mixed when you need extra bite

How to use

1. Shake well.
2. Apply a small bead to palms/fingertips.
3. Rub until fully dry (thin, matte finish).
4. Top with KUMO chalk if desired. Reapply as needed.

Care notes

- For external use only. Avoid eyes, mouth, and broken skin.
- Flammable before drying—keep away from open flame/ignition.
- Stop use if irritation occurs; wash with soap and water. Keep out of reach of children.

A New Standard of Base Layer

Grip that switches on—fast. Thunder lays down a thin, uniform film that dries in moments and holds through long burns. In humid gyms or on warm rock, it turns slippery into steady so each move feels measured and precise.

Crafted with meticulous precision, Thunder isn’t just liquid chalk.

A silica-enhanced formulation creates an even, matte layer that boosts friction without caking. The alcohol base flashes off quickly for low-mess application and cleaner air, whether you’re on fiberglass macros or polished stone.

We build what actually changes your climb

Precision Coverage, Clean Feel

Thunder spreads smoothly over palms and fingertips, leaving a consistent finish that plays perfectly with KUMO. Run it solo for minimal dust sessions, or add a light KUMO top-up when you want maximum bite with fewer re-chalks.

FAQs

Please read our FAQs page to find out more.

Why silica?

It helps form a more uniform, grippy film for consistent coverage—especially in humidity.

Do I still need loose chalk?

Optional. Thunder works solo; adding KUMO boosts bite for longer burns.

Will it dry my skin?

Alcohol can be drying. Use minimally and moisturize post-session.

Indoor or outdoor?

Both. It’s tuned for humid gyms and performs on slick stone.

Is it allowed at my gym?

Many gyms prefer liquid chalk for cleanliness. Check local rules.