Mission Flux Luxury Reusable Hand Warmer. To use this product – simply press the metal platelet inside the product. This then crystalizes the product creating the heat. To reuse – simply place in boiling water for 5-10 minutes, until the crystals turn back into a iquid state and then allow to cool. Each Flux Hand Warmer will stay warm for up to 30 minutes. Mission Flux – Luxury Hand Warmer – Reusable – Clear-BX104Mission Flux Luxury Reusable Hand Warmer. To use this product – simply press the metal platelet inside the product. This then crystalizes the product creating the heat. To reuse – simply place in boiling water for 5-10 minutes, until the crystals turn back into a iquid state and then allow to cool. Each Flux Hand Warmer will stay warm for up to 30 minutes. Mission Flux – Luxury Hand Warmer – Reusable – Blue-BX105Mission Flux Luxury Reusable Hand Warmer. To use this product – simply press the metal platelet inside the product. This then crystalizes the product creating the heat. To reuse – simply place in boiling water for 5-10 minutes, until the crystals turn back into a iquid state and then allow to cool. Each Flux Hand Warmer will stay warm for up to 30 minutes. Mission Flux – Luxury Hand Warmer – Reusable – Red-BX106Mission Flux Luxury Reusable Hand Warmer. To use this product – simply press the metal platelet inside the product. This then crystalizes the product creating the heat. To reuse – simply place in boiling water for 5-10 minutes, until the crystals turn back into a iquid state and then allow to cool. Each Flux Hand Warmer will stay warm for up to 30 minutes. Mission Flux – Luxury Hand Warmer – Reusable – Purple-BX107Mission Flux Luxury Reusable Hand Warmer. To use this product – simply press the metal platelet inside the product. This then crystalizes the product creating the heat. To reuse – simply place in boiling water for 5-10 minutes, until the crystals turn back into a iquid state and then allow to cool. Each Flux Hand Warmer will stay warm for up to 30 minutes. Mission Flux – Luxury Hand Warmer – Reusable – Green-BX108