Chalk Booster 50g | Chalk Rebels

Boost your grip with our chalk booster: ultra-fine chalk with extra high Upsalite content. 50g booster pack.

• 🌊 Made from seawater-based high-purity magnesium carbonate.
• 🧪 Extra high Upsalite content for max moisture absorption.
• 🧗 Perfect for bouldering, climbing, and other grip sports.
• ⚡ Use pure for maximum grip or mix with regular chalk to boost performance.
  

How to use: Mix with chalk as needed. Recommended mix: 1 bag of booster per 100–200g of regular chalk.

Returns
Customers cover return shipping costs unless the item is defective.

Belgium
• €6 to a service point (Bpost or DPD), €6.50 at home
• Free shipping from €60
• Delivery: 1–2 business days

Netherlands, Germany, France, Luxembourg
• €9 (home or DPD service point)
• Free shipping from €60
• Delivery: 2–3 business days

Zone A — Austria, Croatia, Czech Republic, Denmark, Estonia, Finland, Ireland, Italy, Poland, Portugal, Spain (mainland)
• €12
• Free shipping from €150
• Delivery: 3–6 business days

Zone B — Latvia, Romania, Slovenia, Sweden
• €15
• Free shipping from €150
• Delivery: 3–6 business days

Zone C — Greece, Hungary, Slovakia
• €18
• Free shipping from €150
• Delivery: 4–7 business days

Zone D — Bulgaria, Lithuania
• €20
• Free shipping from €150
• Delivery: 4–7 business days

Rest of Europe
• Norway: €25, free from €150
• Serbia: €25
• Switzerland: €35
• Cyprus: €40 (€35 from €150)
• Malta: €40
• North Macedonia, Albania, Kosovo, Montenegro: €40
• Balearic Islands: €50

United Kingdom 🇬🇧
• Orders below £150 / €150 are not accepted (UK VAT rules)
• Free shipping from €150
• Delivery: 3–7 business days
• Import duties/taxes may apply on arrival

United States 🇺🇸
• €50 flat rate, DDP: all import fees and tariffs included (heavy shipments €150)
• Delivery: 4–7 business days

Rest of world 🌍
• Canada €35, China €40, most other countries €40–€60
• Your exact rate is shown at checkout. Not listed? Contact us for a quote.