POPSTRAP - 40mm Cage Strap

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Royal Pop cage strap, built in France

POPSTRAP is a 40mm cage strap engineered for the Royal Pop AP x Swatch, the pocket-watch head released on 16 May 2026. Designed in Rennes and built in our Brittany atelier, this silicone cage turns the Royal Pop into a wearable 40mm wrist piece without touching the case finishing. Each Royal Pop cage strap is moulded from USP Class VI medical-grade silicone, fitted with a 316L stainless steel buckle, and sized for wrists 145mm to 200mm. Made in France. Shipped in 14 working days. Read the Royal Pop strap guide 2026 before choosing your reference.

Designed for the Royal Pop AP x Swatch

The cage was modelled around the exact 40mm dimensions of the Royal Pop head. The internal cradle holds the Royal Pop body through four contact points on the structural ribs, never on the polished or brushed zones. This non-invasive geometry means Royal Pop owners can dismount the strap and return the watch to original presentation without marks. The 40mm Royal Pop sits flush inside the cage, and crown clearance is machined for both 3 o'clock (Savonnette) and 12 o'clock (Lepine) placements found across the Royal Pop variants.

Crown orientation and Royal Pop variants

Because the Royal Pop ships in two crown configurations, the POPSTRAP cage is produced in matched versions. The @3 references are cut for Savonnette-format Royal Pop watches, while the @12 references are cut for Lepine-format Royal Pop watches. Always check your Royal Pop crown position before ordering. See the full Royal Pop colorway and format breakdown.

6 colorways for the Royal Pop

POPSTRAP for the Royal Pop is available in six colorways, each pigmented in-batch during the silicone moulding cycle rather than surface-coated. The Black cage pairs with every Royal Pop reference and reads as the most discreet option. The White cage is bright cold-white, not cream. The Blue @3 fits the Savonnette-crown Royal Pop, while the Blue @12 fits the Lepine-crown Royal Pop in the same blue tone. The Yellow @3 is calibrated to echo the yellow accents on certain Royal Pop dials, and the Green is a deep forest green chosen to contrast the steel-tone Royal Pop cases. Six colors, one cage architecture, every Royal Pop variant covered. Not sure which to pick? The POPSTRAP buying guide walks through every Royal Pop scenario.

Made in France, sized for the Royal Pop

Every Royal Pop cage strap is moulded, demoulded, trimmed, and quality-checked in our Brittany workshop. Silicone is sourced from a French medical-grade supplier, certified USP Class VI hypoallergenic. Wrist range is 145-200mm across twelve adjustment positions. The 316L steel buckle is laser-marked. Assembly per Royal Pop strap is around 38 minutes; lead time is 14 working days. More in our Made in France story.

Specifications

• Compatibility: Royal Pop AP x Swatch, 40mm pocket-watch head (16 May 2026)
• Material: USP Class VI medical-grade silicone, hypoallergenic
• Buckle: 316L stainless steel, laser-engraved
• Wrist range: 145-200mm (12 adjustment positions)
• Variants: Black, White, Blue @3, Blue @12, Yellow @3, Green
• Crown clearance: Savonnette (@3) and Lepine (@12)
• Origin: Made in France, Brittany atelier
• Lead time: 14 working days from France
  

FAQ

When does it ship? Every Royal Pop cage strap ships within 14 working days from our Brittany atelier.

When am I charged? Your card is charged at checkout, before your Royal Pop strap enters the moulding queue.

Will it be restocked? Yes. Royal Pop colorways are restocked in rolling batches. Sold-out variants return within 3 to 5 weeks.

Is it water-safe? Yes. The silicone is rated for full water contact; the buckle is 316L marine-grade.

Duties outside the EU? Orders shipped outside the EU may incur local import duties, paid by the customer on delivery.

BUILT ONCE. WORN FOREVER.

POPSTRAP / CAGE STRAP / MAY 2026

POPSTRAP is an independent product by RANK SAS, Rennes, France. Not affiliated with, endorsed by, or sponsored by Swatch Group or Audemars Piguet. The Royal Pop name and AP x Swatch designation are used strictly referentially, per Article L713-6 of the French Intellectual Property Code, solely to indicate compatibility with the Royal Pop head. We do not sell or resell the Royal Pop watch itself.